[edstorey]

Actually much of the CF era metal insignia does contain both a makers mark and year of manufacture. Here are a few examples.

AIRBORNE CANADA AEROPORTE - Canadian Airborne Regiment - rear - C.jpg

Canadian Special Operations Forces Command - Command Badge - rear - Caret Med 2014 copy.jpg

Dental Branch - collar badge - Breadner 83 - rear copy.jpg

Irish Regiment of Canada - QC - EVCO 80 - rear copy.jpg