The Cooey Model 840 was produced from 1948 to 1970, with an estimated 16,000 units manufactured during this period. The serial number range for the Model 840 is as follows:
Because no centralized, public database exists for Cooey serial numbers, owners must rely on physical markings and historical production windows to estimate the age: Cooey Model 840 Serial Number Lookup
For generations of Canadian shooters, the Cooey Model 840 has been more than just a firearm—it’s a rite of passage. Millions learned to shoot with this humble, utilitarian single-shot .22 rifle. But if you own one, you’ve likely flipped it over, squinted at the tiny serial number stamped into the receiver, and asked: The Cooey Model 840 was produced from 1948