While I believe it is possible for a serial number prefix to have more than one date code it may not be possible to have more than the letter prefix of the.
Glock 19 Gen 2 Manufacture Date ListĪ recent Gunbroker auction brought this to mind as well as previous discussions on actual production dates for the earliest Glock 17 pistols. On the older austrian proofed barrels they would stamp the date on to the barrel using this coding system. When you see your ABC123 serial number there is no direct correlation to manufacturing dates.
I also have the list on a website.Second, everyone is confusing the barrel date coding with the serial number. I won't direct link it out of respect for this site, but if one were to visit it and look under Valuable Info one might find a thread labeled 'Glock Serial Number Research Project v4'.
First off that list is an out of date COPY from the actual that's live over on.