You might also try looking in the book 'The Complete Price Guide to Watches' by Richard M. These tables are only accurate for the movement serial numbers. Please note there is a difference between the number marked on the movement and the one marked on the case.
Remove or open the back cover from your watch and look for a number engraved into the movement this is the serial number for your watch, and by using it, you can find the closest years it was made on these tables. Please use the following tables to help determine the approximate age of your watch.
