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The Citizen serial number decoder

Date a Citizen watch using the serial and movement

You can use this dating tool to find the manufacture date of any Citizen watch using the watch's serial number, Citizen movement code and various case markings. Citizen serial numbers are normally an 8 digit number but can be from 6 to 9 characters and modern Citizens may have a letter (O, N or D) in the second position, if the second digit is a zero check in case it is actually the letter O. This tool supports all 3 Citizen formats.

Citizen serial numbers only decode to give the last digit of the year and the month so I have made a list of ways to narrow down the decade and hopefully pinpoint the exact manufacture date. Select as many options as you can to get the best chance to narrow down the exact date. There are currently over 200 Citizen movements in the database and growing.

Citizen Serial : (Required)
(A 6-9 character code with no dashes or dots in)

Movement :
(A 2-4 digit code often found on the bottom left of the dial between the 6 and 7 o'clock markers, also etched on the movement itself and sometimes on the case back possibly contained within a box)

Water resist markings :
Model / Range :

Select whichever is written on the case back or dial :

My related tools Casio, Omega, Tissot, Rolex, Breitling, Longines.

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