The Cooey 840 is prized for its reliability rather than a high monetary value.
While they are essentially the same gun—a robust, single-shot break action—the later 840s often used different, sometimes considered inferior, materials for some components compared to the early "H.W. Cooey" stamped models. 4. Key Takeaways for Your Lookup
Markings moved from the receiver to the barrel; stocks switched to "plain" hardwood (birch or maple) with no checkering.
Usually ranges between $100 and $250 USD/CAD.
We hope this guide helps you on your journey to uncovering the history of your Cooey 840. If you have information about a specific serial number or have found a new marking not listed here, consider sharing your findings with the collecting community to help refine this knowledge for future enthusiasts.
The Cooey Model 840 was built as an affordable, utilitarian working gun. Because millions of Cooey shotguns were produced, they are not rare. Depending on the condition, gauge (with .410 bore and 28 gauge commanding higher prices than 12 or 16 gauge), and stock condition, they typically value between $100 and $250 USD / CAD. Is it safe to shoot a Cooey Model 840?
Compare to published serial lists:
: This text indicates an early-production barrel or use of leftover parts from the pre-Winchester era (mid-1960s).
: Remove the wooden forend wrapper. Manufacturers occasionally stamped the serial number or assembly codes on the underside of the barrel or the water table of the frame.
Following Winchester’s takeover in 1961, the design was updated and rebranded as the Model 840 in approximately 1967. Key Differences:
: This is the most common location for post-1968 models.
If your shotgun is stamped "Model 840," it was strictly made between . 5. Steps to Take If You Cannot Find a Record
Since no official database exists, dating your Cooey 840 involves a combination of examining its features, markings, and, where possible, comparing its serial number to known examples.
Unlike modern firearms, many Cooey 840s do not have a conventional serial number on the receiver.
Cooey Model 840 Serial Number Lookup Jun 2026
The Cooey 840 is prized for its reliability rather than a high monetary value.
While they are essentially the same gun—a robust, single-shot break action—the later 840s often used different, sometimes considered inferior, materials for some components compared to the early "H.W. Cooey" stamped models. 4. Key Takeaways for Your Lookup
Markings moved from the receiver to the barrel; stocks switched to "plain" hardwood (birch or maple) with no checkering.
Usually ranges between $100 and $250 USD/CAD. Cooey Model 840 Serial Number Lookup
We hope this guide helps you on your journey to uncovering the history of your Cooey 840. If you have information about a specific serial number or have found a new marking not listed here, consider sharing your findings with the collecting community to help refine this knowledge for future enthusiasts.
The Cooey Model 840 was built as an affordable, utilitarian working gun. Because millions of Cooey shotguns were produced, they are not rare. Depending on the condition, gauge (with .410 bore and 28 gauge commanding higher prices than 12 or 16 gauge), and stock condition, they typically value between $100 and $250 USD / CAD. Is it safe to shoot a Cooey Model 840?
Compare to published serial lists:
: This text indicates an early-production barrel or use of leftover parts from the pre-Winchester era (mid-1960s).
: Remove the wooden forend wrapper. Manufacturers occasionally stamped the serial number or assembly codes on the underside of the barrel or the water table of the frame.
Following Winchester’s takeover in 1961, the design was updated and rebranded as the Model 840 in approximately 1967. Key Differences: The Cooey 840 is prized for its reliability
: This is the most common location for post-1968 models.
If your shotgun is stamped "Model 840," it was strictly made between . 5. Steps to Take If You Cannot Find a Record
Since no official database exists, dating your Cooey 840 involves a combination of examining its features, markings, and, where possible, comparing its serial number to known examples. We hope this guide helps you on your
Unlike modern firearms, many Cooey 840s do not have a conventional serial number on the receiver.