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COSC ISO 3159 "Chronometer" certified mechanical watch COSC "Chronometer" certified quartz watch. Each officially COSC certified chronometer is identified by a serial number engraved on its movement and a certification number given by the COSC.
Finally, any auctioned watch without public online records from auctioneers (e.g. major auction houses) will not be included in the ranking. As of December 2022, the most expensive watch (and wristwatch) ever sold at auction is the Patek Philippe Grandmaster Chime Ref. 6300A-010, fetching US$31.19 million (31,000,000 CHF) in Geneva on 9 ...
VIN on a Chinese moped VIN on a 1996 Porsche 993 GT2 VIN visible in the windshield VIN recorded on a Chinese vehicle licence. A vehicle identification number (VIN; also called a chassis number or frame number) is a unique code, including a serial number, used by the automotive industry to identify individual motor vehicles, towed vehicles, motorcycles, scooters and mopeds, as defined by the ...
Every watch movement that the company produced through the early 1950s was engraved with an individual serial number. That number can be used to estimate the date of production. Volunteers have created a database of Waltham serial numbers, [103] models and grades, [104] and descriptions of observed watches. [105]
For instance, a Rolex watch with a serial number starting with 28000 was produced in 1926. Reference 6234 has three smaller sub-dials, to mark the passage of seconds up to 60 seconds (at the 9 o'clock position), minutes up to 30 minutes (at the 3 o'clock position), and hours up to 12 hours (at the 6 o'clock position); all of these match the ...
Serial numbers are often used in network protocols. However, most sequence numbers in computer protocols are limited to a fixed number of bits, and will wrap around after sufficiently many numbers have been allocated. Thus, recently allocated serial numbers may duplicate very old serial numbers, but not other recently allocated serial numbers.
Some early watches, made before the Omega takeover have a date stamped on the mechanism. The company changed hands in the 1970s and the new owners destroyed many of the old records, making it difficult to precisely date most Regina watches. The records that still exist make it possible to roughly date them by their serial numbers.
The check digit consists of one numeric digit providing a means of validating the recording and transmission accuracy of the owner code and serial number. To compute the check digit, the letters have to be converted to numbers. This is done in three steps:
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