If your Model 840 has a serial number, it is typically found in one of these three locations: Stamped on the side or bottom of the frame.
serial number lookup can be challenging because the H.W. Cooey Machine & Arms Company did not maintain consistent, publicly available production records. However, by examining the physical markings and identifying key features, you can narrow down the manufacturing date of your shotgun. Cooey Model 840 Serial Number Lookup
Sometimes written or stamped on the wood underneath the shoulder stock. If your Model 840 has a serial number,
Cooey Model 840 Serial Number Lookup Finding information for a Cooey Model 840 publicly available production records. However