My related tools Rolex, Omega, Tissot, Breitling, Longines, Citizen, Casio. If the serial number starts with an H or B please include that. If the watch type was not being manufactured during the year suggested by the serial number then it tells you that further investigation may be required.

This does not validate if a watch is genuine or not, it purely translates the date code to find the year of manufacture. The Tudor model reference can be found between the lugs on the opposite side of the watch so ensure you use the serial number and not the model reference, a model reference decoder is coming soon. 10-13: Stainless steel CC: Watch diameter size in millimeters DD: Type of Movement. Citizen watch Try the new Citizen serial number decoder. Enter your Seiko serial number and find when the watch was made, its value and links to manuals and info. Free and simple Seiko serial number decoder and movement date finder. Caliber + case number OR model number (on the hangtag of your watch, or on the product page of the website) See the diagram below to locate these numbers on the caseback. Step 3: Serial Number Some Citizen watches have a serial number that can be found on the caseback. You will need to enter the following information: 1. I have tried to make it as accurate as possible but it may be a year or so out either way, it is as a guide only. 123: Constellation BB: Housing Material and Strap Type. If this still does not work, we recommend the manual entry option. This tool supports all 3 of the serial number formats that Tudor have used over the years and covers watches from 1956 to 2002. To find your Tudor's serial number you must remove the strap at the 6 o'clock position and you will see it engraved on the case between the lugs.

Tudor serial number decoder Find the manufacture date of a Tudor watch

Decode Citizen Watch Serial Numbers