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Rolex Vintage Turn-O-Graph 6202 mit Box und Papieren aus 1955
TOP
Rolex Vintage Turn-O-Graph 6202 mit Box und Papieren aus 1955
Php 2,080,648
Seller
TimeElements
31
DE
Rolex Day-Date 40 18 kt Weißgold Schwarz DIA 228239
TOP
Rolex Day-Date 40 18 kt Weißgold Schwarz DIA 228239
Php 2,039,653
Seller
Uhren2000 GmbH
365
DE
Rolex GMT-Master II 116759SARU june 2020 Rolex warranty
TOP
Rolex GMT-Master II 116759SARU june 2020 Rolex warranty
Php 4,036,420
Seller
MMC RIVIERA
6
MC
Hermès Clipper XL Automatic - Box & inhouse certificate
TOP
Hermès Clipper XL Automatic - Box & inhouse certificate
Php 160,826
Free shipping
Seller
Pawndeluxe
190
NL
Omega CONSTELLATION OMEGA CO-AXIAL 38 MM ROSE GOLD
TOP
Omega CONSTELLATION OMEGA CO-AXIAL 38 MM ROSE GOLD
Php 682,344
Seller
Plus Watch - Luxury Watches
2989
IT
Gérald Genta Arena Sport Retro SSPL10 Men's Watch - Papers
TOP
Gérald Genta Arena Sport Retro SSPL10 Men's Watch - Papers
Php 163,980
Free shipping
Seller
Pawndeluxe
190
NL
Rolex GMT-Master II 116758SARU
Rolex GMT-Master II 116758SARU
Php 8,256,710
Free shipping
Seller
Watches & Jewellery of Bond Street Ltd
236
UK
Breitling Bentley Supersport
Breitling Bentley Supersport
Php 277,504
Free shipping
Seller
A. Grimmeissen Uhren An- und Verkauf
286
DE
IWC Portuguese Chronograph 41mm IW371445 Ex IW371401
IWC Portuguese Chronograph 41mm IW371445 Ex IW371401
Php 358,863
Free shipping
Seller
SORELLE RONCO
771
IT
Breitling Galactic 36 Automatic Steel & Rose Gold
Breitling Galactic 36 Automatic Steel & Rose Gold
Php 246,685
Seller
King Jewelers
 
US
Bulgari Carbon Gold
Bulgari Carbon Gold
Php 126,138
Seller
MEGA WATCHES
9
IT
Rolex Submariner Date
Rolex Submariner Date
Php 363,506
Seller
Uhrmageren.com
11
DK
Straight from the manufacturer
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Rolex Datejust 41mm Slate Oyster 2018 verklebt
Rolex Datejust 41mm Slate Oyster 2018 verklebt
Php 520,320
Seller
LUXUS-PORT
52
DE
Chopard Mille Miglia Gran Turismo XL - Limited Edition Box &...
TOP
Chopard Mille Miglia Gran Turismo XL - Limited Edition Box &...
Php 214,435
Free shipping
Seller
Pawndeluxe
190
NL
Rolex Sea-Dweller 4000, Ref. 116600, Full Set, LC100
Rolex Sea-Dweller 4000, Ref. 116600, Full Set, LC100
Php 667,901
Seller
time4watches GmbH
23
DE
Rolex Rare Omani Crest Submariner 1680
Rolex Rare Omani Crest Submariner 1680
Php 3,948,861
Free shipping
Seller
Watches & Jewellery of Bond Street Ltd
236
UK
Rolex Sea Dweller
Rolex Sea Dweller
Php 722,141
Free shipping
Seller
A. Grimmeissen Uhren An- und Verkauf
286
DE
Omega Seamaster AQUA TERRA Co-Axial Master Chronometer.Steel
Omega Seamaster AQUA TERRA Co-Axial Master Chronometer.Steel
Php 249,123
Free shipping
Seller
SORELLE RONCO
771
IT
Rolex 16700 16700 GMT Master Red / Blue Pepsi Bezel (29479)
Rolex 16700 16700 GMT Master Red / Blue Pepsi Bezel (29479)
Php 597,525
Seller
European Watch Company
170
US
Rolex Datejust 41 Dark Rhodium 18k White Gold/Steel Jubilee...
Rolex Datejust 41 Dark Rhodium 18k White Gold/Steel Jubilee...
Php 541,931
Seller
CKLY Trading Limited
17
HK
B.R.M CT-48-AR
TOP
B.R.M CT-48-AR
Php 750,522
Free shipping
Seller
Solexport International
MU
Breitling Navitimer World aus 2016 , Full Set, MINT Condition
Breitling Navitimer World aus 2016 , Full Set, MINT Condition
Php 252,276
Seller
LUXUS-PORT
52
DE
Rolex Oyster Perpetual - Ref: 1002 - 71/72 - Service 08.18
Rolex Oyster Perpetual - Ref: 1002 - 71/72 - Service 08.18
Php 176,593
Seller
mostwantedwatches MWW GmbH
 
DE
Panerai Luminor Submersible 1950 Carbotech, 3 Days PAM 00616
Panerai Luminor Submersible 1950 Carbotech, 3 Days PAM 00616
Php 976,940
Seller
time4watches GmbH
23
DE
Rolex Submariner Date 16618
Rolex Submariner Date 16618
Php 1,041,063
Free shipping
Seller
Watches & Jewellery of Bond Street Ltd
236
UK
Rolex Yacht Master Damenuhr
Rolex Yacht Master Damenuhr
Php 567,622
Free shipping
Seller
A. Grimmeissen Uhren An- und Verkauf
286
DE
Breitling SUPER AVENGER II Chrono 48mm Steel Black Chablon Dial
Breitling SUPER AVENGER II Chrono 48mm Steel Black Chablon Dial
Php 239,662
Free shipping
Seller
SORELLE RONCO
771
IT
Omega 233.32.41.21.01.001 Omega Seamaster 300M Limited Edition...
Omega 233.32.41.21.01.001 Omega Seamaster 300M Limited Edition...
Php 652,344
Seller
European Watch Company
170
US
Omega Seamaster Planet Ocean 600M Master Chronometer Black...
Omega Seamaster Planet Ocean 600M Master Chronometer Black...
Php 227,258
Seller
CKLY Trading Limited
17
HK
B.R.M DDF-12-44-SQ-AJ
TOP
B.R.M DDF-12-44-SQ-AJ
Php 630,060
Free shipping
Seller
Solexport International
MU
Omega Seamaster Diver 300 M Co-Axial 41 mm
Omega Seamaster Diver 300 M Co-Axial 41 mm
Php 158,085
Seller
Millennium Watches
 
SE
Rolex Submariner Date - Ref: 16610 - aus 1999 - Box&Papers
Rolex Submariner Date - Ref: 16610 - aus 1999 - Box&Papers
Php 419,409
Seller
mostwantedwatches MWW GmbH
 
DE
Rolex Sea-Dweller Deepsea, V-Serie, 116660, MK I, Full Set, LC100
Rolex Sea-Dweller Deepsea, V-Serie, 116660, MK I, Full Set, LC100
Php 529,149
Seller
time4watches GmbH
23
DE
Rolex Datejust 69178
Rolex Datejust 69178
Php 466,684
Free shipping
Seller
Watches & Jewellery of Bond Street Ltd
236
UK
Rolex Daydate
Rolex Daydate
Php 835,665
Free shipping
Seller
A. Grimmeissen Uhren An- und Verkauf
286
DE
Breitling Superocean 44 Special Total Blue Ocean Racer II Rubber
Breitling Superocean 44 Special Total Blue Ocean Racer II Rubber
Php 170,917
Free shipping
Seller
SORELLE RONCO
771
IT
Rolex 16550 Explorer II with RARE Transitional Cream Rail Dial...
Rolex 16550 Explorer II with RARE Transitional Cream Rail Dial...
Php 1,068,967
Seller
European Watch Company
170
US
Omega Seamaster Aqua Terra 150M Master Chronometer Blue Steel...
Omega Seamaster Aqua Terra 150M Master Chronometer Blue Steel...
Php 199,986
Seller
CKLY Trading Limited
17
HK
Omega CO-AXIAL GMT 43.5MM 232.90.44.22.03.001
Omega CO-AXIAL GMT 43.5MM 232.90.44.22.03.001
Php 380,223
Free shipping
Seller
Exquisite Timepieces
21
US
Breitling Navitimer Cosmonaute
Breitling Navitimer Cosmonaute
Php 283,811
Seller
MEGA WATCHES
9
IT
Rolex Datejust - 16014 - aus 1985/1986 - Service 08.18
Rolex Datejust - 16014 - aus 1985/1986 - Service 08.18
Php 230,202
Seller
mostwantedwatches MWW GmbH
 
DE
Rolex Yacht Master, Referenz 116622, FULL SET, LC100
Rolex Yacht Master, Referenz 116622, FULL SET, LC100
Php 503,922
Seller
time4watches GmbH
23
DE
Rolex Daytona 116523
Rolex Daytona 116523
Php 753,874
Free shipping
Seller
Watches & Jewellery of Bond Street Ltd
236
UK
Rolex Submariner
Rolex Submariner
Php 1,125,783
Free shipping
Seller
A. Grimmeissen Uhren An- und Verkauf
286
DE
Breitling SUPEROCEAN II 44 Total Blue Diver Pro III Chrono...
Breitling SUPEROCEAN II 44 Total Blue Diver Pro III Chrono...
Php 155,781
Free shipping
Seller
SORELLE RONCO
771
IT
Rolex 116610LV Submariner Green Ceramic Bezel Green Dial...
Rolex 116610LV Submariner Green Ceramic Bezel Green Dial...
Php 740,054
Seller
European Watch Company
170
US
Omega Speedmaster Moonwatch Dark Side of the Moon Black...
Omega Speedmaster Moonwatch Dark Side of the Moon Black...
Php 397,881
Seller
CKLY Trading Limited
17
HK
Omega Diver 300M Co-Axial 41mm 212.30.41.20.01.003
Omega Diver 300M Co-Axial 41mm 212.30.41.20.01.003
Php 169,938
Free shipping
Seller
Exquisite Timepieces
21
US
Rolex Sea-dweller 126600 – New Model
Rolex Sea-dweller 126600 – New Model
Php 725,294
Seller
Mall of the Watch
866
MC
Rolex Datejust- Ref: 16220 - aus 1998 - Rolex Box&Papiere
Rolex Datejust- Ref: 16220 - aus 1998 - Rolex Box&Papiere
Php 283,811
Seller
mostwantedwatches MWW GmbH
 
DE
Rolex GMT Master II, Z-Serie, 16710 BLRO, Rectangular, 3186
Rolex GMT Master II, Z-Serie, 16710 BLRO, Rectangular, 3186
Php 945,405
Seller
time4watches GmbH
23
DE
Rolex Daytona 116519
Rolex Daytona 116519
Php 969,266
Free shipping
Seller
Watches & Jewellery of Bond Street Ltd
236
UK
Omega Seamaster Automatic Chrono
Omega Seamaster Automatic Chrono
Php 154,519
Free shipping
Seller
A. Grimmeissen Uhren An- und Verkauf
286
DE
Breitling AVENGER HURRICANE 50mm 24 Hours Yellow Textile
Breitling AVENGER HURRICANE 50mm 24 Hours Yellow Textile
Php 377,784
Free shipping
Seller
SORELLE RONCO
771
IT
Rolex 116710BLNR GMT Master II Ceramic Black & Blue "Batman"...
Rolex 116710BLNR GMT Master II Ceramic Black & Blue "Batman"...
Php 740,054
Seller
European Watch Company
170
US
Omega Seamaster Diver 300m Black Steel 36.25mm - 212.30.36.20....
Omega Seamaster Diver 300m Black Steel 36.25mm - 212.30.36.20....
Php 138,450
Seller
CKLY Trading Limited
17
HK
Omega Seamaster Diver 300 M Co-Axial 41 mm
Omega Seamaster Diver 300 M Co-Axial 41 mm
Php 158,085
Seller
Millennium Watches
 
SE
Rolex Datejust
Rolex Datejust
Php 510,859
Seller
Exklusive Watches
206
DE
Rolex Explorer II - Ref: 16570 - aus 2005 - Rolex Box&Papers
Rolex Explorer II - Ref: 16570 - aus 2005 - Rolex Box&Papers
Php 378,414
Seller
mostwantedwatches MWW GmbH
 
DE
B.R.M V8-44-GULF
TOP
B.R.M V8-44-GULF
Php 377,784
Free shipping
Seller
Solexport International
MU
Rolex Explorer II Steel Gents 16570
Rolex Explorer II Steel Gents 16570
Php 427,195
Free shipping
Seller
Watches & Jewellery of Bond Street Ltd
236
UK
Breitling Chronomat
Breitling Chronomat
Php 204,974
Free shipping
Seller
A. Grimmeissen Uhren An- und Verkauf
286
DE
Omega Seamaster Rio 2016 Limited Edition  Olympic Collection Rio
Omega Seamaster Rio 2016 Limited Edition Olympic Collection Rio
Php 249,123
Free shipping
Seller
SORELLE RONCO
771
IT
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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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