Cooey Model 840 Serial Number Lookup -

The Model 840 is a single-shot, bolt-action .410 bore shotgun (though rare 20-gauge versions exist). It is famous for its "snap-action" bolt release and lightweight design. Production continued through World War II and into the post-war era until 1961, when Cooey was purchased by Olin Industries—the parent company of Winchester-Western.

"Why?"

If your receiver is stamped "Made by Winchester-Western (Canada) Limited," it was definitely produced after the 1961 acquisition. 2. Finding the Serial Number (If It Exists) Cooey Model 840 Serial Number Lookup