Cooey Model 840 Serial Number Lookup Direct

When identifying your gun, check for these specific variations which can affect value and identification:

Because digital serial number lookup tools for the Cooey Model 840 are non-existent, you need to turn to the community of Canadian firearms collectors.

The Cooey 840 is sometimes called “the farmer’s gun”—it lived in barns, pickup trucks, and traplines for decades. Low serial numbers? Rare. But a well-worn 840 with no number? That’s actually more original.

Check these places:

If you find a number, try:

⚠️ Reality check: Even with a number, you likely won’t find a neat database like a car VIN lookup. Production records for Cooey were often handwritten, scattered, or lost after Winchester closed the Cobourg plant.

Because records are non-existent, "matching numbers" are irrelevant for most Cooeys. Value is determined by condition. Cooey Model 840 Serial Number Lookup

So how do you date your 840? Try these clues:

| 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 |

If your gun has a serial number on the barrel but also says "Made in Canada" with an importer's stamp (e.g., "O.F. Mossberg & Sons"), it was an American-export model from the 1960s. In this case, the serial number is purely for US GCA 1968 compliance and offers no date. When identifying your gun, check for these specific

Here’s the surprising part: many Cooey Model 840 firearms never had a serial number.

Before the U.S. Gun Control Act of 1968, Canadian and American manufacturers were not required to serialize budget-friendly firearms. The Cooey 840 was a “utility gun”—made to be affordable, not tracked. As a result: