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Rolex Day-Date Tridor Masterpiece Meteorite Diamond Dial
TOP
Rolex Day-Date Tridor Masterpiece Meteorite Diamond Dial
Rp. 687,295,296
Seller
Juwelier Burger, since 2001
570
NL
Rolex Submariner Date Full Diamonds
TOP
Rolex Submariner Date Full Diamonds
Rp. 485,456,704
Seller
Juwelier Burger, since 2001
570
NL
Breitling Limited Edition Frecce Tricolori Chronomat 44 - 70...
TOP
Breitling Limited Edition Frecce Tricolori Chronomat 44 - 70...
Rp. 60,029,588
Free shipping
Seller
Pawndeluxe
57
NL
Rolex Daytona Diamond & Ruby Set 116589SALV
TOP
Rolex Daytona Diamond & Ruby Set 116589SALV
Rp. 1,678,259,968
Free shipping
Seller
Watches & Jewellery of Bond Street Ltd
145
UK
Rolex Gmt-Master II LN 18K Yellow Gold
TOP
Rolex Gmt-Master II LN 18K Yellow Gold
Rp. 356,697,568
Seller
Juwelier Burger, since 2001
570
NL
Rolex Submariner James Bond No Crown Guards
TOP
Rolex Submariner James Bond No Crown Guards
Rp. 426,297,056
Seller
Juwelier Burger, since 2001
570
NL
Breitling Chronomat 44mm B01 Manufaktur Stahl-/Roségold MOP...
TOP
Breitling Chronomat 44mm B01 Manufaktur Stahl-/Roségold MOP...
Rp. 128,741,720
Seller
Uhrenkapital
270
DE
Omega Men's Omega Seamaster Professional 300M 2561.80 Blue...
Omega Men's Omega Seamaster Professional 300M 2561.80 Blue...
Rp. 21,104,900
Seller
Collectors Coins & Jewelry
 
US
Rolex GMT 2  Ref.16710 Bj.2007  (Z) Ungetragen LC100  NUR...
Rolex GMT 2 Ref.16710 Bj.2007 (Z) Ungetragen LC100 NUR...
Rp. 347,997,632
Seller
Uhren - Borgardts
 
DE
Rolex Daytona
Rolex Daytona
Rp. 240,988,368
Free shipping
Seller
A. Grimmeissen Uhren An- und Verkauf
124
DE
Omega Seamaster Planet Ocean Chronograph NEU 12/2017 mit Box/Pap.
Omega Seamaster Planet Ocean Chronograph NEU 12/2017 mit Box/Pap.
Rp. 86,129,416
Seller
Matthias Wohne Uhrmachermeister
6
DE
Doxa GRANDE METRE BLUE PLANET LIMITED EDITION 800PCS WORLD
TOP
Doxa GRANDE METRE BLUE PLANET LIMITED EDITION 800PCS WORLD
Rp. 54,232,424
Free shipping
Seller
Przedsiębiorstwo Handlowe Usługowe
78
PL
Omega Constellation Co-Axial 35mm
Omega Constellation Co-Axial 35mm
Rp. 40,019,728
Seller
Soprana dal 1910 srl
 
IT
Montblanc Timewalker
Montblanc Timewalker
Rp. 81,692,448
Seller
Handelshaus Rheinländer
 
DE
Chopard Tycoon Two O Ten Chrono
TOP
Chopard Tycoon Two O Ten Chrono
Rp. 55,679,620
Seller
Juwelier Burger, since 2001
570
NL
Hublot Big Bang Carbon Bezel Baguette 24000€ HT
TOP
Hublot Big Bang Carbon Bezel Baguette 24000€ HT
Rp. 501,116,576
Seller
RIVIERAWATCH
72
FR
Rolex 2000 Men's Rolex Sea-Dweller 16600 Stainless 40mm Black...
Rolex 2000 Men's Rolex Sea-Dweller 16600 Stainless 40mm Black...
Rp. 88,957,224
Seller
Collectors Coins & Jewelry
 
US
Rolex GMT 16700 Bj.1993 (N) LC100 Tritium Blatt
Rolex GMT 16700 Bj.1993 (N) LC100 Tritium Blatt
Rp. 139,181,648
Seller
Uhren - Borgardts
 
DE
Rolex Submariner
Rolex Submariner
Rp. 173,998,816
Free shipping
Seller
A. Grimmeissen Uhren An- und Verkauf
124
DE
TAG Heuer Grand Carrera CAV518.BFC6237
TAG Heuer Grand Carrera CAV518.BFC6237
Rp. 99,823,120
Seller
JOYERÍA TACTOC
 
ES
Louis Chevrolet Swiss Watches Chrono-Tour Fashion
Louis Chevrolet Swiss Watches Chrono-Tour Fashion
Rp. 29,043,408
Free shipping
Seller
Louis Chevrolet Watch Company SA
 
CH
Omega Speedmaster Mark II Co-Axial Chronograph
Omega Speedmaster Mark II Co-Axial Chronograph
Rp. 53,334,756
Seller
Horology 411
 
US
Omega Grey Side of the Moon Speedmaster UNWORN
Omega Grey Side of the Moon Speedmaster UNWORN
Rp. 134,022,472
Seller
LBA Exquisite Time Pieces
5
US
Rolex Datejust Pearlmaster 34 White Gold Diamond MOP Dial
TOP
Rolex Datejust Pearlmaster 34 White Gold Diamond MOP Dial
Rp. 499,376,576
Seller
Juwelier Burger, since 2001
570
NL
Breitling Superocean II Chronograph
Breitling Superocean II Chronograph
Rp. 67,859,536
Seller
Juwelier Vogl GmbH
 
DE
Zenith 2016 Zenith El Primero Chronograph Silver 38mm 36000...
Zenith 2016 Zenith El Primero Chronograph Silver 38mm 36000...
Rp. 64,940,328
Seller
Collectors Coins & Jewelry
 
US
Rolex GMT-Master 1675 LC100 Full Set (Papiere+Rechnung+Besch+Box)
Rolex GMT-Master 1675 LC100 Full Set (Papiere+Rechnung+Besch+Box)
Rp. 382,797,376
Seller
Uhren - Borgardts
 
DE
Rolex Yacht Master
Rolex Yacht Master
Rp. 156,598,928
Free shipping
Seller
A. Grimmeissen Uhren An- und Verkauf
124
DE
Omega De Ville Hour Vision
Omega De Ville Hour Vision
Rp. 208,798,576
Seller
Sfera GmbH
 
AT
Louis Chevrolet Swiss Watches Chrono-Tour Classic
Louis Chevrolet Swiss Watches Chrono-Tour Classic
Rp. 29,043,408
Free shipping
Seller
Louis Chevrolet Watch Company SA
 
CH
Omega Seamaster Aqua Terra 150M Co-Axial 42 mm
Omega Seamaster Aqua Terra 150M Co-Axial 42 mm
Rp. 168,778,848
Seller
Soprana dal 1910 srl
 
IT
Rolex Date - Under Factory Warranty & Original Papers
Rolex Date - Under Factory Warranty & Original Papers
Rp. 84,108,616
Seller
Horology 411
 
US
Omega Speedmaster Moonphase Master Co-Axial Chronograph
TOP
Omega Speedmaster Moonphase Master Co-Axial Chronograph
Rp. 116,144,208
Seller
Juwelier Burger, since 2001
570
NL
Omega Speedmaster Day Date
Omega Speedmaster Day Date
Rp. 76,559,472
Seller
Terzian Garo & Sia OE
 
GR
Rolex 1972 Vintage Rolex GMT-Master 1675 Pepsi Blue Red Mark I...
Rolex 1972 Vintage Rolex GMT-Master 1675 Pepsi Blue Red Mark I...
Rp. 138,447,024
Seller
Collectors Coins & Jewelry
 
US
Rolex Milgauss 116400GV Bj.2011 LC100
Rolex Milgauss 116400GV Bj.2011 LC100
Rp. 104,399,288
Seller
Uhren - Borgardts
 
DE
Rolex Submariner Sea-Dweller  NEU
Rolex Submariner Sea-Dweller NEU
Rp. 147,898,992
Free shipping
Seller
A. Grimmeissen Uhren An- und Verkauf
124
DE
Omega Speedmaster Professional Moon To Mars
Omega Speedmaster Professional Moon To Mars
Rp. 75,472,048
Seller
Wrights The Jewellers
 
UK
Louis Chevrolet Swiss Watches Chrono-Tour Sport
Louis Chevrolet Swiss Watches Chrono-Tour Sport
Rp. 29,043,408
Free shipping
Seller
Louis Chevrolet Watch Company SA
 
CH
Breitling Superocean 42
Breitling Superocean 42
Rp. 34,799,760
Seller
Sfera GmbH
 
AT
Omega Seamaster Planet Ocean
Omega Seamaster Planet Ocean
Rp. 55,610,980
Seller
Martin Wilkinson Ltd
 
UK
Breitling Navitimer World (A24322)
Breitling Navitimer World (A24322)
Rp. 56,529,472
Seller
The Watch Movement
 
US
Rolex Sea-Dweller
Rolex Sea-Dweller
Rp. 112,215,024
Seller
A. W. Porter & Son Ltd
 
UK
Rolex Vintage Rolex Daytona Cosmograph 6265 Black 37mm 18K...
Rolex Vintage Rolex Daytona Cosmograph 6265 Black 37mm 18K...
Rp. 1,696,209,280
Seller
Collectors Coins & Jewelry
 
US
Rolex DateJust Stahl 36mm Referenz 1603 Baujahr ca.1974
Rolex DateJust Stahl 36mm Referenz 1603 Baujahr ca.1974
Rp. 47,849,672
Seller
Uhren - Borgardts
 
DE
Rolex Submariner
Rolex Submariner
Rp. 124,409,152
Free shipping
Seller
A. Grimmeissen Uhren An- und Verkauf
124
DE
Omega Seamaster Planet Ocean
Omega Seamaster Planet Ocean
Rp. 77,358,840
Seller
Avanti Fine Jewellery
 
UK
Louis Chevrolet Swiss Watches LC-01 Classic
Louis Chevrolet Swiss Watches LC-01 Classic
Rp. 14,507,168
Free shipping
Seller
Louis Chevrolet Watch Company SA
 
CH
Omega De Ville Hour Vision
Omega De Ville Hour Vision
Rp. 93,959,360
Seller
Sfera GmbH
 
AT
Omega Constellation 18195191
Omega Constellation 18195191
Rp. 65,510,552
Seller
JOYERÍA TACTOC
 
ES
Montblanc Timewalker
Montblanc Timewalker
Rp. 46,892,680
Seller
Handelshaus Rheinländer
 
DE
Eberhard & Co. Chrono 120 ÉME Aniversario
Eberhard & Co. Chrono 120 ÉME Aniversario
Rp. 179,218,768
Seller
CANTELI JOYEROS SL
 
ES
Breitling Men's Breitling SuperOcean Heritage 46 A17320 Black...
Breitling Men's Breitling SuperOcean Heritage 46 A17320 Black...
Rp. 38,082,116
Seller
Collectors Coins & Jewelry
 
US
Breitling Super Avenger Black Limitierte Serie Bj.2009
Breitling Super Avenger Black Limitierte Serie Bj.2009
Rp. 51,329,648
Seller
Uhren - Borgardts
 
DE
Rolex GMT Master II
Rolex GMT Master II
Rp. 408,897,216
Free shipping
Seller
A. Grimmeissen Uhren An- und Verkauf
124
DE
Elgin 14k Muti-Tone Gold Elgin Antique Pocket Watch 1.5" Diameter
Elgin 14k Muti-Tone Gold Elgin Antique Pocket Watch 1.5" Diameter
Rp. 17,669,876
Seller
Tangible Investments
 
US
Louis Chevrolet Swiss Watches LC-01 Fashion
Louis Chevrolet Swiss Watches LC-01 Fashion
Rp. 14,507,168
Free shipping
Seller
Louis Chevrolet Watch Company SA
 
CH
Zenith Elite HW Power Reserve Chronometre
Zenith Elite HW Power Reserve Chronometre
Rp. 93,524,368
Seller
Dutch Jewel Company
8
NL
TAG Heuer Grand Carrera WAV511B.FC6230
TAG Heuer Grand Carrera WAV511B.FC6230
Rp. 50,894,652
Seller
JOYERÍA TACTOC
 
ES
Tissot Ballade Powermatic 80 COSC
Tissot Ballade Powermatic 80 COSC
Rp. 15,485,894
Seller
ANZOVINO GIOIELLIERI SRL
 
IT
Breitling Avenger II Seawolf Yellow Black M17331E2/I530 LIMITED
Breitling Avenger II Seawolf Yellow Black M17331E2/I530 LIMITED
Rp. 42,393,564
Seller
Alux Watches
 
US
Breitling MINT Men's Breitling Navitimer Chronograph 41.8mm...
Breitling MINT Men's Breitling Navitimer Chronograph 41.8mm...
Rp. 55,045,200
Seller
Collectors Coins & Jewelry
 
US
Rolex Explorer 2  LC100  Ref.216570
Rolex Explorer 2 LC100 Ref.216570
Rp. 99,179,320
Seller
Uhren - Borgardts
 
DE
Omega Seamaster  Chronometer
Omega Seamaster Chronometer
Rp. 27,839,810
Free shipping
Seller
A. Grimmeissen Uhren An- und Verkauf
124
DE
Rowe Bros. Chicago Rowe Bros 14k Gold 17 Jewel Antique
Rowe Bros. Chicago Rowe Bros 14k Gold 17 Jewel Antique
Rp. 17,669,876
Seller
Tangible Investments
 
US
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Chronometer - Certified Precision

"Chronometer" may sound like a fancy name for a normal watch - after all, it just comes from the Greek words for "time" and "measure" - but chronometers are really something quite special. Chronometers are watches, yes, but watches that have been tried and tested and certified to meet exacting precision standards. The COSC in Switzerland determines which watches may actually call themselves "chronometers".

The Oceanic Origins of Chronometers

Though the Swiss set the standard, the English coined the word. In the quest to calculate the longitude, the Englishman Jeremy Thacker, a clockmaker of extraordinary skill, created a series of increasingly accurate clocks, well beyond what had had previously been achieved. The clocks were intended to be used aboard ships and had to keep absolutely accurate time in order to allow for calculating longitude precisely, and thus fixing the position of the ship in the vast ocean. The last of Thacker's chronometers was actually more like a very large pocket watch.
Other clockmakers - and increasingly watchmakers - copied from and improved upon Thacker's final chronometer, producing watches of greater and greater precision. The original standards for accuracy were actually far more exacting than those currently maintained by the COSC in Switzerland, so very few watches were certified as chronometers and thus very few were actually produced and sold. The original chronometer requirements for mechanical watches are no longer necessary, since digital watches can already exceed them, but chronometers are still manufactured and sold (and resold) today as examples of extremely fine precision engineering. The use of jewels and precious metals in watches owes its origins to chronometers - these materials were used to make the mechanical movements as precise as possible.

Officially Certified Chronometers

Chronometers are no longer rare. More than a million Officially Certified Chronometer certificates are issued each year. Those watches that pass the most rigorous of the COSG's tests are rewarded with a special serial number and, indeed, the right to call themselves "chronometers" at all. Chronometers must meet several requirements: they must display the seconds; they must be highly precise; they must demonstrate that precision over the course of several consecutive days of testing; they must perform precisely in different positions and at different temperatures.

Chronometers in Everyday Use

This may sound extreme, but such reliability was crucial for individuals and groups that had to rely on the precision of portable mechanical timekeepers in the past. Pilots watches, for instance, needed to perform as chronometers (and those that did not had to be hackable). The famous B-Uhren, commissioned by the German Luftwaffe and manufactured by several companies, were chronometer-certified pilots watches - or chronometers that were used as pilots watches, depending on your perspective. Interestingly, despite the many years between Thacker's invention and the production of the B-Uhren, chronometers were still tightly bound to use in navigation.
First at sea, then in the air. And, still today, at sea again - or at least under it. Some diving watches, like the Rolex submariner, are also certified chronometers. Divers must be able to reliably track how long they've been under and how much time they have to surface.
Though their accuracy may have been eclipsed by digital watches, chronometers are still useful today.

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