Index für Rolex Rolex Chronographe 2303 Uhren

Details (11 Ergebnisse)

• Verkaufsdatum : 14/12/2016

  Land : Vereinigtes Königreich

  
  

  Bonhams #23512 - 2016-12 - Fine Watches Wristwatches including the Collection of a European Nobleman

  New Bond Street

  Lot ID : 87

   

  • GBP
  • EUR
  • USD

  Nicht verkauft

  • ...
  • ...
  • ...

  Schätzung:

  • 12000 - 18000
  • 13691 - 20536
  • 19201 - 28802

  
  

  Marke : Rolex

  Modell : Rolex Chronographe

  Referenz : Rolex - 2303

  
  

  Kategorie : Armbanduhr

  Zeitraum : 1930er

  Uhren-Kennung : 147**

  Uhrwerk : Mechanisch

  Gehäusematerial : Gelbgold

  Gehäuseform : Tonneauform

  Mit Diamanten : Ja :

  Ziffernblattfarbe : Schwarz

  Armbandmaterial : *leath*

  Referenz-Details : 2303 ,

  Komplikationen : Chronometer, Tachometer

  
  

  Rolex. A rare and unusual 18K gold manual wind single button chronograph wristwatch

  
  

  Beschreibung : Ref:2303, Serial No.147**, Circa 1930 17-jewel manual wind movement with steel chronograph works, black dial with Arabic numeral hour markers, white outer 1/5th second divisions with Arabic five minute markers, further outer tachymetre scale, white dagger hands with centre chronograph hand, subsidiary dials at 3 and 9 for constant seconds and 30 minute recording, polished tonneau form case with screw down back, single chronograph button set within the crown, fitted brown leather strap with plated buckle, case, dial and movement signed 31mm.

  Rolex. A rare and unusual 18K gold manual wind single button chronograph wristwatch

  Beschreibung minimieren Lesen Sie unsere Experten-Beschreibung

  Beschreibung : Ref:2303, Serial No.147**, Circa 1930 17-jewel manual wind movement with steel chronograph works, black dial with Arabic numeral hour markers, white outer 1/5th second divisions with Arabic five minute markers, further outer tachymetre scale, white dagger hands with centre chronograph hand, subsidiary dials at 3 and 9 for constant seconds and 30 minute recording, polished tonneau form case with screw down back, single chronograph button set within the crown, fitted brown leather strap with plated buckle, case, dial and movement signed 31mm.
• Verkaufsdatum : 08/11/2015

  Land : Schweiz

  
  

  Antiquorum #295 - 2015-11 - Important Modern Vintage Timepieces

  Geneva

  Lot ID : 151

   

  • CHF
  • EUR
  • USD

  Verkauft:

  • 17500
  • 14278
  • 20008

  Schätzung:

  • 10000 - 15000
  • 8159 - 12239
  • 11433 - 17150

  
  

  Marke : Rolex

  Modell : Rolex Chronographe

  Referenz : Rolex - 2303

  
  

  Kategorie : Armbanduhr

  Zeitraum : 1930er

  Gehäusematerial : Gelbgold

  Ziffernblattfarbe : Schwarz

  Referenz-Details : 2303 , BABY SINGLE BUTTON .

  Komplikationen : Chronometer, Tachometer

  
  

  ROLEX, REF. 2303, BABY SINGLE BUTTON.CHRONOGRAPH, BLACK DIAL YELLOW GOLD.Rolex, case No. 16121, Ref. 2303. Made in 1935, retailed by.Kerby..Very fine and extremely rare, small, 18K yellow gold.wristwatch with co-axial button chronograph, registers.tachome

  ROLEX, REF. 2303, BABY SINGLE BUTTON.CHRONOGRAPH, BLACK DIAL YELLOW GOLD.Rolex, case No. 16121, Ref. 2303. Made in 1935, retailed by.Kerby..Very fine and extremely rare, small, 18K yellow gold.wristwatch with co-axial button chronograph, registers.tachome

  Beschreibung minimieren Lesen Sie unsere Experten-Beschreibung
• Verkaufsdatum : 29/05/2013

  Land : Sonderverwaltungsregion Hongkong

  
  

  Christies #3219 - 2013-05 - Important watches

  Hong Kong

  Lot ID : 3004

   

  • HKD
  • EUR
  • USD

  Verkauft:

  • 93750
  • 12066
  • 8606

  Schätzung:

  • 50000 - 70000
  • 4590 - 6426
  • 6435 - 9009

  
  

  Marke : Rolex

  Modell : Rolex Chronographe

  Referenz : Rolex - 2303

  
  

  Kategorie :

  Uhrwerk : Mechanisch

  Gehäusematerial : Gelbgold

  Gehäuseform : Tonneauform

  Ziffernblattfarbe : Zweifarbig

  Referenz-Details : 2303

  Maße : 28 MM

  Komplikationen : Chronometer, Tachometer

  
  

  ROLEX

  
  

  Beschreibung : ROLEX. A FINE, VERY RARE AND SMALL 9K GOLD SINGLE BUTTON CHRONOGRAPH WRISTWATCH WITH TWO-TONE SECTOR DIAL.SIGNED ROLEX, CHRONOGRAPHE, REF. 2303, CASE NO. 16'728, CIRCA 1935.Mechanical lever movement, 17 jewels, gilt and silvered dial, black Arabic and baton numerals, outer blue tachymetre scale, two subsidiary dials for constant seconds and 30 minute register, tonneau-shaped case, snap on back, single button chronograph operated through the crown, case, dial and movement signed.28 mm. diam.

  ROLEX

  Beschreibung minimieren Lesen Sie unsere Experten-Beschreibung

  Beschreibung : ROLEX. A FINE, VERY RARE AND SMALL 9K GOLD SINGLE BUTTON CHRONOGRAPH WRISTWATCH WITH TWO-TONE SECTOR DIAL.SIGNED ROLEX, CHRONOGRAPHE, REF. 2303, CASE NO. 16'728, CIRCA 1935.Mechanical lever movement, 17 jewels, gilt and silvered dial, black Arabic and baton numerals, outer blue tachymetre scale, two subsidiary dials for constant seconds and 30 minute register, tonneau-shaped case, snap on back, single button chronograph operated through the crown, case, dial and movement signed.28 mm. diam.
• Verkaufsdatum : 13/05/2013

  Land : Schweiz

  
  

  Christies #1395 - 2013-05 - Important watches

  Geneva

  Lot ID : 272

   

  • CHF
  • EUR
  • USD

  Verkauft:

  • 23750
  • 27153
  • 19378

  Schätzung:

  • 15000 - 25000
  • 12239 - 20398
  • 17150 - 28583

  
  

  Marke : Rolex

  Modell : Rolex Chronographe

  Referenz : Rolex - 2303

  
  

  Kategorie :

  Uhrwerk : Mechanisch

  Format : 10 /

  Gehäusematerial : Stahl

  Gehäuseform : Rund

  Ziffernblattfarbe : Creme

  Referenz-Details : 2303

  Maße : 28 MM

  Komplikationen : Chronometer, Tachometer

  
  

  Rolex

  
  

  Beschreibung : Rolex. A very fine, rare and small stainless steel co-axial single button chronograph wristwatch with two-tone sector dial.Signed Rolex, ref. 2303, case no. 021187, circa 1928.Cal. 10 1/2''' mechanical lever movement, 17 jewels, two-tone silvered sector dial, Arabic 12 and 6, outer Arabic five minute divisions, outermost blue tachymetre scale, two subsidiary dials for constant seconds and 30 minutes register, small circular case, snap on back, chronograph button in the crown, stainless steel Rolex buckle, case, dial and movement signed.28 mm. diam.

  Rolex

  Beschreibung minimieren Lesen Sie unsere Experten-Beschreibung

  Beschreibung : Rolex. A very fine, rare and small stainless steel co-axial single button chronograph wristwatch with two-tone sector dial.Signed Rolex, ref. 2303, case no. 021187, circa 1928.Cal. 10 1/2''' mechanical lever movement, 17 jewels, two-tone silvered sector dial, Arabic 12 and 6, outer Arabic five minute divisions, outermost blue tachymetre scale, two subsidiary dials for constant seconds and 30 minutes register, small circular case, snap on back, chronograph button in the crown, stainless steel Rolex buckle, case, dial and movement signed.28 mm. diam.
• Verkaufsdatum : 20/03/2010

  Land : Schweiz

  
  

  Antiquorum #227 - 2010-03 - Important Watches

  Geneva

  Lot ID : 341

   

  • CHF
  • EUR
  • USD

  Verkauft:

  • 48000
  • 39163
  • 54878

  Schätzung:

  • 40000 - 60000
  • 32636 - 48954
  • 45732 - 68598

  
  

  Marke : Rolex

  Modell : Rolex Chronographe

  Referenz : Rolex - 2303

  
  

  Kategorie : Armbanduhr

  Zeitraum : 1930er

  Uhrwerk : Sonstige

  Format : 10 /

  Gehäusematerial : Gelbgold

  Ziffernblattfarbe : Zweifarbig

  Armbandmaterial : *leath*

  Referenz-Details : 2303

  Dicke : 10.5 mm

  Komplikationen : Chronometer, Tachometer

  
  

  Rolex Ref. 2303, Single Button Chronograph.Rolex, Ref. 2303. Case No. 17890. Made in 1935, retailed by.Ronchi Milano..Very fine and extremely rare, small, 18K yellow gold wristwatch with.co-axial button chronograph, registers, tachometer and the original.

  
  

  Beschreibung : C. Two-body, polished and brushed, concave lugs, snap-on case back..D. Two-tone, Sector with printed baton indexes and Arabic 6 and.12, outer minutes and fifth second divisions, subsidiary seconds and.30-minute register, outer tachometer. Blued steel feuille hands..M. Cal. 10 1/2''', rhodium-plated, 17 jewels, straight line lever.escapement, monometallic balance, self-compensating Breguet.balance spring. Index regulator..Dial, case and movement signed..Diam. 28.5 mm. Thickness 10.5 mm.

  Rolex Ref. 2303, Single Button Chronograph.Rolex, Ref. 2303. Case No. 17890. Made in 1935, retailed by.Ronchi Milano..Very fine and extremely rare, small, 18K yellow gold wristwatch with.co-axial button chronograph, registers, tachometer and the original.

  Beschreibung minimieren Lesen Sie unsere Experten-Beschreibung

  Beschreibung : C. Two-body, polished and brushed, concave lugs, snap-on case back..D. Two-tone, Sector with printed baton indexes and Arabic 6 and.12, outer minutes and fifth second divisions, subsidiary seconds and.30-minute register, outer tachometer. Blued steel feuille hands..M. Cal. 10 1/2''', rhodium-plated, 17 jewels, straight line lever.escapement, monometallic balance, self-compensating Breguet.balance spring. Index regulator..Dial, case and movement signed..Diam. 28.5 mm. Thickness 10.5 mm.
• Verkaufsdatum : 17/11/2008

  Land : Schweiz

  
  

  Christies #1357 - 2008-11 - Important watches

  Geneva

  Lot ID : 264

   

  • CHF
  • EUR
  • USD

  Verkauft:

  • 40000
  • 32636
  • 45732

  Schätzung:

  • 30000 - 40000
  • 24477 - 32636
  • 34299 - 45732

  
  

  Marke : Rolex

  Modell : Rolex Chronographe

  Referenz : Rolex - 2303

  
  

  Kategorie : Armbanduhr

  Zeitraum : 1930er

  Uhren-Kennung : 17887

  Gehäuseform : Rund

  Referenz-Details : 2303

  Komplikationen : Chronometer, Tachometer

  
  

  Rolex. A very fine, rare and small 18K gold single button chronograph wristwatch with two-tone silvered dial

  
  

  Beschreibung : Lot Description.Rolex. A very fine, rare and small 18K gold single button chronograph wristwatch with two-tone silvered dial.Signed Rolex, retailed by Broudarge Paris, ref. 2303, case no. 17'887, circa 1930.With nickel-finished lever movement, 17 jewels, two-tone silvered dial, Arabic numerals, outer blue tachymetre scale, two subsidiary dials for constant seconds and 30 minutes register, two subsidiary dials indicating constant seconds and 30 minutes register, small circular case, snap on back, chronograph button in the crown, 18K gold Rolex buckle, case and movement signed by maker, dial signed by maker and retailer.28 mm. diam..View Lot Notes ›

  Rolex. A very fine, rare and small 18K gold single button chronograph wristwatch with two-tone silvered dial

  Beschreibung minimieren Lesen Sie unsere Experten-Beschreibung

  Beschreibung : Lot Description.Rolex. A very fine, rare and small 18K gold single button chronograph wristwatch with two-tone silvered dial.Signed Rolex, retailed by Broudarge Paris, ref. 2303, case no. 17'887, circa 1930.With nickel-finished lever movement, 17 jewels, two-tone silvered dial, Arabic numerals, outer blue tachymetre scale, two subsidiary dials for constant seconds and 30 minutes register, two subsidiary dials indicating constant seconds and 30 minutes register, small circular case, snap on back, chronograph button in the crown, 18K gold Rolex buckle, case and movement signed by maker, dial signed by maker and retailer.28 mm. diam..View Lot Notes ›
• Verkaufsdatum : 14/10/2007

  Land : Schweiz

  
  

  Antiquorum #171 - 2007-10 - Important Collectors’ Watches, Pocket Watches Clocks

  Geneva

  Lot ID : 491

   

  • CHF
  • EUR
  • USD

  Verkauft:

  • 51920
  • 42362
  • 59360

  Schätzung:

  • 22000 - 27000
  • 17950 - 22029
  • 25153 - 30869

  
  

  Marke : Rolex

  Modell : Rolex Chronographe

  Referenz : Rolex - 2303

  
  

  Kategorie : Armbanduhr

  Zeitraum : 1930er

  Format : 10 /

  Gehäusematerial : Gelbgold

  Ziffernblattfarbe : Schwarz

  Referenz-Details : 2303

  Dicke : 10.5 mm

  Komplikationen : Chronometer, Tachometer

  
  

  Ref. 2303, Yellow Gold Single Button Chronograph _ Black Dial.Rolex, case No. 16121, Ref. 2303. Made in 1935, retailed by Kerby..Very fine and extremely rare, small, 18K yellow gold wristwatch with co-axial button.chronograph, registers, tachometer, black

  
  

  Beschreibung : C. Two-body, polished and brushed, concave lugs, pre’ssure case back. D. Black, with white painted baton.indexes, outer minutes and fifth of a second track, subsidiary seconds and 30-minute registers, outermost.tachometer graduation. White feuille hands. M. Cal. 10 1/2''', rhodium-plated, 17 jewels, straight-line lever.escapement, monometallic balance, self-compensating Breguet balance spring, index regulator..Dial, case and movement signed..Diam. 29 mm. Thickness 10.5 mm..From The Collection

  Ref. 2303, Yellow Gold Single Button Chronograph _ Black Dial.Rolex, case No. 16121, Ref. 2303. Made in 1935, retailed by Kerby..Very fine and extremely rare, small, 18K yellow gold wristwatch with co-axial button.chronograph, registers, tachometer, black

  Beschreibung minimieren Lesen Sie unsere Experten-Beschreibung

  Beschreibung : C. Two-body, polished and brushed, concave lugs, pre’ssure case back. D. Black, with white painted baton.indexes, outer minutes and fifth of a second track, subsidiary seconds and 30-minute registers, outermost.tachometer graduation. White feuille hands. M. Cal. 10 1/2''', rhodium-plated, 17 jewels, straight-line lever.escapement, monometallic balance, self-compensating Breguet balance spring, index regulator..Dial, case and movement signed..Diam. 29 mm. Thickness 10.5 mm..From The Collection
• Verkaufsdatum : 13/11/2006

  Land : Schweiz

  
  

  Christies #1339 - 2006-11 - Important pocket watches and wristwatches

  Geneva

  Lot ID : 332

   

  • CHF
  • EUR
  • USD

  Verkauft:

  • 28800
  • 23498
  • 32927

  Schätzung:

  • 10000 - 15000
  • 8159 - 12239
  • 11433 - 17150

  
  

  Marke : Rolex

  Modell : Rolex Chronographe

  Referenz : Rolex - 2303

  
  

  Kategorie : Armbanduhr

  Zeitraum : 1920er

  Uhren-Kennung : 022310

  Gehäusematerial : Silber

  Gehäuseform : Rund

  Referenz-Details : 2303

  Komplikationen : Chronometer, Tachometer

  
  

  Rolex. A very fine, rare and small stainless steel single button chronograph wristwatch with two-tone silvered sector dial

  
  

  Beschreibung : Lot Description.Rolex. A very fine, rare and small stainless steel single button chronograph wristwatch with two-tone silvered sector dial.Signed Rolex, ref. 2303, case no. 022310, circa 1928.With nickel-finished lever movement, 17 jewels, the two-tone silvered sector dial with Arabic and baton numerals in black hard enamel to the inner chapter ring, outer tachymetre scale, two subsidiary dials indicating constant seconds and 30 minutes register, in circular case with downturned lugs, snap on back, chronograph button in the band, case, dial and movement signed.28 mm. diam..Special Notice.Prospective buyers should be aware that the importation of Rolex watches into the United States is highly restricted. Rolex watches may not be shipped into the USA and can only be imported personally. Generally a buyer may import only one watch into the USA. For further information please contact our specialists in charge of the sale. Please note other countries may have comparable import restrictions for luxury watches..View Lot Notes ›

  Rolex. A very fine, rare and small stainless steel single button chronograph wristwatch with two-tone silvered sector dial

  Beschreibung minimieren Lesen Sie unsere Experten-Beschreibung

  Beschreibung : Lot Description.Rolex. A very fine, rare and small stainless steel single button chronograph wristwatch with two-tone silvered sector dial.Signed Rolex, ref. 2303, case no. 022310, circa 1928.With nickel-finished lever movement, 17 jewels, the two-tone silvered sector dial with Arabic and baton numerals in black hard enamel to the inner chapter ring, outer tachymetre scale, two subsidiary dials indicating constant seconds and 30 minutes register, in circular case with downturned lugs, snap on back, chronograph button in the band, case, dial and movement signed.28 mm. diam..Special Notice.Prospective buyers should be aware that the importation of Rolex watches into the United States is highly restricted. Rolex watches may not be shipped into the USA and can only be imported personally. Generally a buyer may import only one watch into the USA. For further information please contact our specialists in charge of the sale. Please note other countries may have comparable import restrictions for luxury watches..View Lot Notes ›
• Verkaufsdatum : 14/05/2006

  Land : Schweiz

  
  

  Antiquorum #108 - 2006-05 - The Mondani Collection of Rolex Wristwatches / Important Collectors’ Wristwatches, Pocket Watches Clocks

  Geneva

  Lot ID : 137

   

  • CHF
  • EUR
  • USD

  Verkauft:

  • 88500
  • 72207
  • 101182

  Schätzung:

  • 30000 - 50000
  • 24477 - 40795
  • 34299 - 57165

  
  

  Marke : Rolex

  Modell : Rolex Chronographe

  Referenz : Rolex - 2303

  
  

  Kategorie : Armbanduhr

  Zeitraum : 1930er

  Uhrwerk : Sonstige

  Format : 10 /

  Gehäusematerial : Gelbgold

  Ziffernblattfarbe : Zweifarbig

  Armbandmaterial : *leath*

  Referenz-Details : 2303

  Dicke : 10.5 mm

  Komplikationen : Chronometer, Tachometer

  
  

  Ref. 2303, Single Button Chronograph.Rolex, Ref. 2303. Case No. 17890. Made in 1935, retailed by.Ronchi Milano..Very fine and extremely rare, small, 18K yellow gold wristwatch with co-axial.button chronograph, registers, tachometer and the original Rolex

  
  

  Beschreibung : C. Two-body, brushed, concave lugs. D. Two-tone, Sector with printed baton.indexes and Arabic 6 and 12, outer minutes and fifth second divisions.subsidiary seconds and 30-minute register, outer tachometer. Blued steel.feuille hands. M. Cal. 10 1/2''', rhodium-plated, 17 jewels, straight line lever.escapement, monometallic balance, self-compensating Breguet balancespring..Index regulator..Dial, case and movement signed..Diam. 28.5 mm. Thickness 10.5 mm.

  Ref. 2303, Single Button Chronograph.Rolex, Ref. 2303. Case No. 17890. Made in 1935, retailed by.Ronchi Milano..Very fine and extremely rare, small, 18K yellow gold wristwatch with co-axial.button chronograph, registers, tachometer and the original Rolex

  Beschreibung minimieren Lesen Sie unsere Experten-Beschreibung

  Beschreibung : C. Two-body, brushed, concave lugs. D. Two-tone, Sector with printed baton.indexes and Arabic 6 and 12, outer minutes and fifth second divisions.subsidiary seconds and 30-minute register, outer tachometer. Blued steel.feuille hands. M. Cal. 10 1/2''', rhodium-plated, 17 jewels, straight line lever.escapement, monometallic balance, self-compensating Breguet balancespring..Index regulator..Dial, case and movement signed..Diam. 28.5 mm. Thickness 10.5 mm.
• Verkaufsdatum : 26/04/2004

  Land : Sonderverwaltungsregion Hongkong

  
  

  Christies #2168 - 2004-04 - Important watches

  Hong Kong

  Lot ID : 1512

   

  • HKD
  • EUR
  • USD

  Verkauft:

  • 113525
  • 10422
  • 14611

  Schätzung:

  • 96000 - 140000
  • 8813 - 12852
  • 12355 - 18018

  
  

  Marke : Rolex

  Modell : Rolex Chronographe

  Referenz : Rolex - 2303

  
  

  Kategorie : Armbanduhr

  Zeitraum : 1930er

  Uhren-Kennung : 14743

  Gehäusematerial : Gelbgold

  Gehäuseform : Tonneauform

  Referenz-Details : 2303

  Komplikationen : Chronometer

  
  

  ROLEX. A RARE 18K GOLD SINGLE-BUTTON CHRONOGRAPH WRISTWATCH

  
  

  Beschreibung : Lot Description.ROLEX. A RARE 18K GOLD SINGLE-BUTTON CHRONOGRAPH WRISTWATCH.Signed Rolex, Ref. 2303, No. 14743, circa 1935.With nickel-finished jewelled lever movement, the two-tone silvered dial with Breguet numerals, outer tachometric scale, blued steel hands, two subsidiary dials indicating constant seconds and 30 minutes register, the tonneau-shaped case with snap on back, chronograph operated through button in the crown, together with a gilt Rolex buckle, case, dial and movement signed.27 mm. diam..Special Notice.Prospective buyers are advised that we cannot arrange delivery of Corum, Rolex, Piaget or Franck Muller watches to the United States due to import restrictions. For further information please contact our specialists in charge of the sale.View Lot Notes ›

  ROLEX. A RARE 18K GOLD SINGLE-BUTTON CHRONOGRAPH WRISTWATCH

  Beschreibung minimieren Lesen Sie unsere Experten-Beschreibung

  Beschreibung : Lot Description.ROLEX. A RARE 18K GOLD SINGLE-BUTTON CHRONOGRAPH WRISTWATCH.Signed Rolex, Ref. 2303, No. 14743, circa 1935.With nickel-finished jewelled lever movement, the two-tone silvered dial with Breguet numerals, outer tachometric scale, blued steel hands, two subsidiary dials indicating constant seconds and 30 minutes register, the tonneau-shaped case with snap on back, chronograph operated through button in the crown, together with a gilt Rolex buckle, case, dial and movement signed.27 mm. diam..Special Notice.Prospective buyers are advised that we cannot arrange delivery of Corum, Rolex, Piaget or Franck Muller watches to the United States due to import restrictions. For further information please contact our specialists in charge of the sale.View Lot Notes ›
• Rolex : Rolex Chronographe
  Verkaufsdatum : 17/10/1992

  Land : Schweiz

  
  

  Antiquorum #140 - 1992-10 - Important Wristwatches, Watches Clocks

  Geneva

  Lot ID : 175

  Marke : Rolex

  Modell : Rolex Chronographe

  Referenz : Rolex - 2303

  
  

  Kategorie : Armbanduhr

  Zustand : Sehr guter Zustand

  Zeitraum : 1930er

  Gehäusematerial : Stahl

  Ziffernblattfarbe : Silber

  Referenz-Details : 2303

  Komplikationen : Chronometer, Tachometer

  
  

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  Rolex, for Gobbi Milano, Ref. 2303, made in 1936.considered at the time as the smallest chronograph.in the world..Extremely fine and rare, small, stainless steel.gentleman's wristwatch with single button chronograph.register and tachometer.

  Beschreibung minimieren Lesen Sie unsere Experten-Beschreibung

  Beschreibung : C. polished, satined. D. mat silver with painted Arabic.numerals and indexes + auxiliary seconds and 30.minutes register dials, outer tachometer graduation..Feuille blued steel hands. M. 10 1/2 ' rhodiumed, 17.jewels, lever escapement, monometallic balance, selfcompensating.Breguet balance-spring, the coaxial.single button on the winding-crown is for start-stop and.return to zero functions of the chronograph. Dial, case.and movement signed..In very good condition..Diam. 30 mm.