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Rolex Submariner Date 126610LN Unworn Steel 41mm Automatic
Promoted
Rolex Submariner Date
41mm 126610LN Unworn 2022+
C$20,119
+ C$557 for shipping
Rolex Datejust 41 126334 Unworn Steel 41mm Automatic
Promoted
Rolex Datejust 41
Mother of Pearl Diamond Dial 126334 - Oyster Bracelet Unworn 2022
C$22,278
Free shipping
Rolex Datejust 41 126334 New White gold 41mm Automatic
Promoted
Rolex Datejust 41
NEW Datejust 41 BLACK DIAMOND
C$20,613
+ C$221 for shipping
Rolex GMT-Master II 126710BLNR New Steel 40mm Automatic
Promoted
Rolex GMT-Master II
126710BLNR NEW 2023 MARCH Batgirl Batman Jubilee Steel 40 mm
C$27,647
+ C$627 for shipping
Rolex GMT-Master II 126720VTNR New Steel 40mm Automatic
Promoted
Rolex GMT-Master II
NEW 2023 GMT-Master II "Sprite" Jubilee
C$35,377
+ C$221 for shipping
Omega Speedmaster Professional Moonwatch 310.30.42.50.01.001 Unworn Steel 42mm Manual winding
Promoted
Omega Speedmaster Professional Moonwatch
Co-Axial Hesalite NEW 2023
C$7,765
+ C$110 for shipping
Rolex GMT-Master II 126720VTNR New Steel 40mm Automatic
Promoted
Rolex GMT-Master II
2023 GMT-Master II Destro/Lefty/Sprite Oyster Box/Papers/Card 126720VTNR
C$33,078
Free shipping
Omega Speedmaster 522.30.42.30.04.001 New Steel 42mm Manual winding
Omega Speedmaster
2020 Tokyo - 5 WATCH COLLECTION
C$75,906
+ C$97 for shipping
Rolex Daytona 116595RBOW Very good Rose gold 40mm Automatic
Promoted
Rolex Daytona
Rainbow "Full Set"
C$729,722
+ C$258 for shipping
Rolex Datejust 41 126334 Unworn Steel 41mm Automatic
Promoted
Rolex Datejust 41
2019 Datejust 41 Boxes Papers Slate Roman Wimbledon Dial Jubilee Bracelet 126334
C$22,141
+ C$249 for shipping
Rolex Daytona 116519 Very good White gold 40mm Automatic
Rolex Daytona
1997 Rolex Daytona 16519 18K White Gold Yellow MOP Diamond Dial w/Service Card
C$139,277
Free shipping
Rolex Datejust 41 126334 Unworn Steel 41mm Automatic
Promoted
Rolex Datejust 41
In Stock 2023 Datejust 41 Mother of Pearl Diamond Dial 126334 Jubilee Bracelet
C$21,163
Free shipping
Rolex Explorer II 226570 New Steel 42mm Automatic
Promoted
Rolex Explorer II
226570 NEW 2023 White Polar Oyster Steel 42 mm
C$19,429
+ C$627 for shipping
Rolex Datejust 41 126334 New Steel 41mm Automatic
Promoted
Rolex Datejust 41
NEW 2023 Datejust 41 GREEN MOTIF OYSTER
C$22,807
+ C$221 for shipping
Rolex GMT-Master II 126720VTNR New Steel Automatic
Promoted
Rolex GMT-Master II
With A Green And Black Bezel "SPRITE" 126720VTNR
C$33,427
+ C$138 for shipping
Breitling Navitimer 8 AB0117131B1A1 Unworn Steel 43mm Automatic
Promoted
Breitling Navitimer 8
Chronograph 43 Black Box/Papers AB0117
C$6,407
Free shipping
Universal Genève Compax 885104/02 Very good Steel 40mm Manual winding Canada, Newmarket
Promoted
Universal Genève Compax
Space Compax
C$21,888
Excl. shipping
Private Seller
Omega Speedmaster Professional Moonwatch 311.92.44.51.01.006 New Ceramic Automatic
Promoted
Omega Speedmaster Professional Moonwatch
Chronograph Dark Side Of The Moon Vintage 311.92.44.51.01.006
C$13,648
+ C$138 for shipping
Rolex Datejust 41 126334 Unworn Steel 41mm Automatic
Promoted
Rolex Datejust 41
2020 Datejust 41 Boxes Papers Slate Roman Wimbledon Dial Jubilee Bracelet 126334
C$21,911
+ C$249 for shipping
Piaget Polo FortyFive P10534 Fair Titanium 45mm Chronograph
Piaget Polo FortyFive
Forty Five Titanium Automatic Chronograph Wristwatch P10534
C$10,027
Free shipping
Rolex Datejust 41 126334 Very good Steel 41mm Automatic
Promoted
Rolex Datejust 41
In Stock 2023 Datejust 41 Wimbledon Dial 126334 Oyster Bracelet
C$18,656
Free shipping
Rolex Submariner (No Date) 124060 New Steel 41mm Automatic
Promoted
Rolex Submariner (No Date)
124060 NEW 2023 Black Steel 41 mm
C$19,060
+ C$627 for shipping
Rolex Datejust 41 126334 New Steel 41mm Automatic
Promoted
Rolex Datejust 41
NEW 2023 Datejust 41 WIMBELDON JUBILEE
C$21,310
+ C$221 for shipping
Rolex GMT-Master II 126720VTNR New Steel Automatic
Promoted
Rolex GMT-Master II
With A Green And Black Bezel "SPRITE" 126720VTNR
C$34,123
+ C$138 for shipping
Omega Seamaster Diver 300 M 210.92.44.20.01.003 Unworn Ceramic 43.5mm Automatic
Omega Seamaster Diver 300 M
Co-Axial Master Chronometer
C$12,048
+ C$138 for shipping
Patek Philippe Calatrava 584 Very good Yellow gold 35mm Manual winding
Promoted
Patek Philippe Calatrava
35 mm Vintage 18K Gold Gelbgold Handaufzug Manual Herrenuhr cal.12-120
C$17,978
+ C$453 for shipping
Omega Seamaster Diver 300 M 210.22.42.20.03.002 New Gold/Steel 42mm Automatic
Promoted
Omega Seamaster Diver 300 M
Blue Dial Sedna Gold 210.22.42.20.03.002
C$9,191
+ C$138 for shipping
Omega Seamaster Planet Ocean 232.30.44.22.01.001 New Steel 43.5mm Automatic
Promoted
Omega Seamaster Planet Ocean
2022 Seamaster Planet Ocean GMT Boxes Papers 232.30.44
C$9,673
+ C$249 for shipping
Panerai PAM 00063 Good Steel 44mm Automatic
Panerai
Luminor GMT Ocean Chronometer 300M PAM00063 623/1500 - 44MM
C$6,616
Free shipping
Rolex Datejust 41 126334 Very good Steel 41mm Automatic
Promoted
Rolex Datejust 41
In Stock Datejust 41 Blue Index Dial 126334 Jubilee Bracelet
C$18,099
Free shipping

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Rolex Explorer II 226570 New Steel 42mm Automatic
Promoted
Rolex Explorer II
226570 NEW 2023 Black Oyster Steel 42 mm
C$18,036
+ C$627 for shipping
Rolex Datejust 41 126334 New Steel 41mm Automatic
Promoted
Rolex Datejust 41
NEW 2023 Datejust 41 BRIGHT BLACK DIAL JUBILEE 126234
C$19,917
+ C$221 for shipping
Rolex Datejust 41 126334 New Steel 41mm Automatic
Promoted
Rolex Datejust 41
Oyster 41 mm Oystersteel Mint Green Dial Fluted Bezel Jubilee Bracelet Ref 126334
C$22,981
+ C$138 for shipping
Omega Seamaster Aqua Terra 231.10.42.21.01.004 Good Steel 41.5mm Automatic Canada, Spruce Grove
Promoted
Omega Seamaster Aqua Terra
Golf Edition
C$5,295
Excl. shipping
Private Seller
Rolex GMT-Master II 126720VTNR New Steel 40mm Automatic
Rolex GMT-Master II
126720VTNR "Sprite" 2022 Jubilee
C$34,818
+ C$138 for shipping
Breitling Superocean 46 U17368221B1S1 Very good Steel 46mm Automatic
Breitling Superocean 46
Automatic Gold Blacksteel 46mm Watch U17368
C$6,671
+ C$138 for shipping
Omega Seamaster Planet Ocean 215.30.44.21.01.001 Very good Steel 44mm Automatic
Promoted
Omega Seamaster Planet Ocean
2019 Seamaster Planet Ocean Boxes Papers Coaxial 44mm Stainless 215.30.44
C$8,265
+ C$249 for shipping
Concord Impresario 14.69.210 Very good Steel 38mm Automatic
Concord Impresario
Triple Date Automatic Chronograph (El Primero Movt) 14.69.210
C$5,153
Free shipping
Rolex Datejust 41 126334 Unworn Steel 41mm Automatic
Promoted
Rolex Datejust 41
In Stock 2023 Datejust 41 Azzurro Blue Roman Dial 126334 Oyster Bracelet
C$17,403
Free shipping
Rolex Oyster Perpetual 41 124300 New Steel 41mm Automatic
Promoted
Rolex Oyster Perpetual 41
124300 NEW 2023 MARCH Black Steel 41 mm
C$13,231
+ C$627 for shipping
Rolex Datejust 41 126334 New Steel 41mm Automatic
Promoted
Rolex Datejust 41
NEW 2023 Datejust 41 SILVER OYSTER
C$18,454
+ C$221 for shipping
Rolex Datejust 41 126334 New Steel 41mm Automatic
Promoted
Rolex Datejust 41
Oyster 41 mm Oystersteel Mint Green Dial Fluted Bezel Oyster Bracelet Ref 126334
C$22,284
+ C$138 for shipping
Breitling Chronomat Evolution B13352 Very good Gold/Steel 44mm Automatic Canada, North Vancouver
Promoted
Breitling Chronomat Evolution
B13352
C$4,999
Excl. shipping
Private Seller
Rolex GMT-Master II 126720VTNR New Steel 40mm Automatic
Rolex GMT-Master II
126720VTNR "Sprite" 2022 Jubilee
C$34,818
+ C$138 for shipping
Fortis Marinemaster F8120013 New Steel 40mm Automatic
Promoted
Fortis Marinemaster
M-44 Amber-orange rubber
C$5,261
Free shipping
Omega Seamaster Planet Ocean 232.30.38.20.01.002 Unworn Steel 37.5mm Automatic
Promoted
Omega Seamaster Planet Ocean
2017 Unworn Stickers Boxes Papers 37.5 mm 232.30.38.20.01.002
C$7,935
+ C$249 for shipping
Rolex Datejust 41 126334 Unworn Steel 41mm Automatic
Promoted
Rolex Datejust 41
41mm 126334 2023 Wimbledon Dial Stainless Steel Jubilee Band w. Box & Card
C$21,308
+ C$277 for shipping
Rolex Datejust 41 126334 Unworn White gold 41mm Automatic
Promoted
Rolex Datejust 41
In Stock 2023 Datejust 41 Slate Grey Index Dial 126334 Oyster Bracelet
C$17,403
Free shipping
Rolex Submariner Date 126610LN New Steel 41mm Automatic
Promoted
Rolex Submariner Date
126610LN NEW 2023 Black 41 mm
C$20,871
+ C$627 for shipping
Rolex Datejust 41 126334 New Steel 41mm Automatic
Promoted
Rolex Datejust 41
NEW 2023 Datejust 41 BLUE DIAMOND JUBILEE
C$22,283
+ C$221 for shipping
Rolex Datejust 41 126334 New White gold 41mm Automatic
Promoted
Rolex Datejust 41
18k White Gold & Steel Black Diamond Dial Jubilee (126334)
C$22,284
+ C$138 for shipping
Corum Admiral's Cup (submodel) 985.641.20.F371 Very good Steel 44mm Automatic Canada, Montréal
Promoted
Corum Admiral's Cup
Regatta 44
C$4,775
Excl. shipping
Private Seller
Rolex Datejust 41 126334 New Steel 41mm Automatic
Rolex Datejust 41
126334 Blue Diamond Jubilee 2023
C$22,701
+ C$138 for shipping
Rolex Sea-Dweller 126600 Unworn Steel 43mm Automatic Canada, Abbotsford
Rolex Sea-Dweller
126600
C$22,500
Free shipping
Omega Speedmaster Racing 326.30.40.50.01.001 New Steel 40mm Automatic
Promoted
Omega Speedmaster Racing
2023 Speedmaster Racing New with Stickers Boxes Cards 40mm Black Coaxial
C$6,683
+ C$249 for shipping
Rolex Datejust 41 126334 Unworn Steel 41mm Automatic
Promoted
Rolex Datejust 41
2021 126334 Blue Roman Dial Stainless Steel Jubilee Band w. Box/Card
C$20,333
+ C$277 for shipping
Rolex Day-Date 36 18348 Good Yellow gold 36mm Automatic
Promoted
Rolex Day-Date 36
Factory Black Diamond Dial Bezel Box & Papers
C$30,634
+ C$202 for shipping
Rolex Submariner Date 126618LB New Yellow gold 41mm Automatic
Promoted
Rolex Submariner Date
126618LB NEW 2023 Blue Yellow Gold 41 mm
C$61,979
+ C$627 for shipping
Rolex Datejust 41 126334 New Steel 41mm Automatic
Promoted
Rolex Datejust 41
NEW 2022 Datejust 41 WIMBLEDON DIAL
C$20,195
+ C$221 for shipping
Rolex Datejust 41 126334 New Steel 41mm Automatic
Promoted
Rolex Datejust 41
18k White Gold & Steel Dark Rhodium Diamond Dial Jubilee 126334
C$22,284
+ C$138 for shipping
Omega Speedmaster Professional Moonwatch 311.92.44.51.01.006 New Ceramic Automatic
Omega Speedmaster Professional Moonwatch
Dark Side Of The Moon Omega Warranty
C$13,371
+ C$138 for shipping
Rolex Submariner Date 126610LN Very good Steel 41mm Automatic
Rolex Submariner Date
126610LN 2022
C$19,219
+ C$138 for shipping
Rolex GMT-Master II 126720VTNR New Steel 40mm Automatic
Rolex GMT-Master II
126720VTNR GMT-Master II Sprite Left Handed Jubilee
C$37,289
+ C$277 for shipping

Performance of a Similar Model

Rolex Datejust 41
126334 ( )
Case material
Steel
Dial
Grey







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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.