Glocktalk has a serial number sticky
Glock will tell you if you call.
You will have to call Glock with the serial number.
Check with Glock Customer Service through their website.
Mid 80's or so.
Glocktalk.com has an extensive sn database.
http://www.mujglock.com/en/glock-production-date.html
try this web site http://www.topglock.com/dating.htm if that doesn't work try calling glock at (770) 432-1202 or their toll free number 1-866-225-4098 and all glocks come with the shells that were test fired, they have the dates
There is a large serial number database on Glocktalk.com. Some books published on Glocks are available that also contain data.
Production date was 1968.
Production date 1977.
Production date was 1976.
Production date was 1977.