Cooey Model 840 Serial Number Lookup Jun 2026

| Feature | Approx. Era | |---------|-------------| | “Cooey Machine & Arms Co.” on barrel | Pre-1961 | | “Winchester-Western Corp., Cobourg, Ont.” | 1961–early 1970s | | Plastic trigger guard or buttplate | Later production (late ‘60s–’70s) | | Model marked as “840” alone (no “Cooey”) | Post-1965 |

Sometimes written or stamped on the wood underneath the shoulder stock. Cooey Model 840 Serial Number Lookup