This serial numbers are compiled alphabetically by the watch brand. For ease of reference, we have compiled all the serial number references we could find in one convenient place, and will add additional serial number tables as we can. In addition info on serial numbers for all American Watch Brands and a few European ones plus other Vintage Watch facts and information.This is a Go To site. Many of you are curious how to tell the manufacturing date of your watch from the watch serial number located on the movement, or sometimes case. SERIAL NUMBERS TO MANUFACTURE DATE REFERENCE GUIDE