Cooey (and later Winchester) did not keep exhaustive public serial number records for the
If you want to pin down more details about your shotgun, tell me: What are stamped on the barrel? What is the gauge or chamber size listed? Are there any unique logos or proof marks on the metal? Share public link
Locating a definitive serial number lookup for the Cooey Model 840
The Model 840 was chambered in 12 gauge, 16 gauge, 20 gauge, 28 gauge, and .410 bore. Check the chamber size stamp (e.g., 2 ¾" or 3" Shells). Early models primarily stuck to 2 ¾" chambers, while later production runs accommodated 3" magnum shells, which helps narrow the window to the 1970s. Summary Checklist for Dating Your Cooey 840 Cooey Model 840 Serial Number Lookup
If your Cooey Model 840 lacks a serial number, it was made between 1965 and 1968. How to Find Your Serial Number
Look near the receiver on the barrel for a two-letter or two-number code that may indicate the month and year, though this is inconsistent on Cooey models. 3. Compare with Known Production Dates
If your gun has a brand name like "Ranger" (Eaton's), "Sure Shot" (Simpson's), "Mercury" (Woodward's), or "Hiawatha" (McLeod's), it is a "house brand" of the Model 840. Cooey (and later Winchester) did not keep exhaustive
Following the buyout, the model was updated slightly and rebranded as the Model 840, which went into production around 1968 and was produced until 1979 .
No. Standard online Winchester serial number lookup tools generally do not include the Canadian Cooey production lines. The records were kept separate and were largely destroyed or archived offline when the Cobourg plant shut down in 1979. What is the value of a Cooey Model 840?
The story of dating a Cooey Model 840 is less about a formal database and more about playing detective with the steel itself. Because formal factory records for Cooey were largely lost or never centralized after the company was sold to Winchester Share public link Locating a definitive serial number
Cooey Model 840 Serial Number Lookup: A Comprehensive Guide to Dating Your Shotgun
Because Cooey was a small Canadian company that was eventually bought by Winchester, standard serial number lookup tools often fall short.
Because the Model 840 was introduced in the mid-1960s, early production runs entirely lack a serial number. 2. Post-1968 Winchester Serial Sequences