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1st Row
Many people mistake the longer number on the case back, which is the watch serial number, for the watch model number. The 4 digit number is very important in identifying the watch. The other model number typically starts with a “W” and is found on the paperwork only.
![Cylindre Cylindre](https://cdn0.rubylane.com/_pod/item/1481007/AC15-746-3/Swiss-Silver-Pocket-Watch-pic-1A-2048%3A10.10-ffffffffa04317f8-f.jpg)
Mark and explanation
- TC or CTC = Transport Canada
- 3ALM = Aluminum specification (Canada)
- 124 = Service pressure (bar)
- T11.3KG = Tare weight (Kilograms)
Who Made Cylindre Pocket Watch
2nd Row
- Seiko watches have a 6 or 7 character serial number on their casebacks. The second character can be a letter but the rest are all numbers. You can use the Seiko serial number in conjunction with the movement number to calculate the year of manufacture.
- Find your Apple Watch model number. Pop open the Watch app on your iPhone and then follow these simple steps to see your Apple Watch model number. 1) Go to the My Watch tab at the bottom and then select General. 2) Tap About. 3) Go down to Model and if it starts with the letter M, tap it. You’ll then see your model number beginning with the.
Mark and explanation
![Cylindre Watch Serial Number Cylindre Watch Serial Number](https://www.iphonetricks.org/wp-content/uploads/2015/05/serial-number-on-apple-watch-case.jpg)
- DOT = US Department of Transportation
- 3AL = Aluminum specification (USA)
- 1800 = Service pressure (psi)
- U372530 = Serial number
- Luxfer or M#### = Manufacturing plant identifier
3rd Row
Mark and explanation Table plus 1 0 build 222 inches.
- 01 = Month of manufacture
- A = Mark of independent inspector
- 98 = Year of manufacture
- 20#CO2 = CO2 capacity
- TW24.9 = Tare wight (lbs)
Cylindre Watch Serial Number Online
Cylindre Watch Serial Number 1
Stamping layouts have changed slightly over the years. If in doubt, please contact customer service.