The Japanese-made Seiko watches have become synonymous with detail-oriented craftmanship and durability.
The sleek look and attention to detail have made these watches a favorite since 1881 when the company began as the brainchild of master watchmaker K. With such a rich history, it is no wonder that the exact production year of many of the watches is difficult to determine.
For current information about Seiko divers and access to an active Japanese watch collector's community, please visit the new Seiko & Citizen Watch Forum. -- Kevin Chan This Seiko Divers Reference covers the standard 150m & 200m automatic models that Seiko has been making since 1965.
It also contains some information on the "high-end" Professional Divers.
The first character of the serial number represents the year of manufacture within a particular decade whilst the second two characters represent the month (01-09 for January to September and 10-12 for October to December).
Airman 1 with Felsa 692 "Bidynator" 23-jewel: 1953-1960 Airman 1 with A. Schild 1701 17-jewel: 1960-1967 Airman 1 and SST with A.It's not unusual to find movements that are one or two years older than the cases containing them. Perhaps less reliably, stamps on bracelets (circa 1995 and beyond) provide a manufacturing date in the same way.For example, a case stamped with the number "2106" would indicate that the watch was made in the 21st. Likewise, a bracelet stamped with the number "4807" indicates that the bracelet was manufactured in the 48th. Source: It is believed (although no one seems to be completely sure) that Citizen used a similar serial number dating system to that employed by Seiko (see below).It’s no secret that I’m a huge fan of vintage Seiko watches.Their innovation, timeless style and incomparable bang-for-your-buck value make them a slam dunk for me.