I assume you have either the Model 84 or the Model 840 Winchester/Cooey.When Winchester purchased the H.W. Cooey Company ,of Ontario,Canada,in about 1961 ,they continued the manufacture of the Model 84 Cooey shotgun that was  introduced in 1948.The only changes made were the stamping change on the receiver from Made by H.W. Cooey to Made by Winchester Western(Canada Limited).I believe it was in the late 60’s, Winchester cheapened the Cooey line ,like they did with the Winchester line in 1964.

   The Model 84 became the Model 840,which was stamped on the side of the barrel.Steel receivers were replaced with cheaper metal and walnut wood was replaced with maple or birch.Early change over guns ,can be found with walnut and ,steel parts left over from the Model 84 production.The Winchester Model 370 was the stable mate of the Model 840.The earlier Wincheste/Cooey Model 840 shotguns had stamped checkering on the forend and pistol grip,while the Winchester Model 370 did not have it.Later Winchester/Cooey Model 840 shotguns had no checkering.

  When the Winchester Model 370 became the Winchester Model 37A,many of the changes were made to the Model 840 as well.Such as a redesigned hammer and fuller forend.

 For many years Cooey firearms had little collector interest/value.However, of late years interest in Cooey firearms has been on the rise and so have prices in Canada.Not sure about interest in the United States.

 Many people are now starting to realize the just how well made the Cooey and early Winchester/Cooey firearms were made.Steel and walnut with nice bluing.Cooey guns were sort of ,”Guns of the people guns.”They were never overly expensive,but were well made ,shot well and stood up to extremely hard and rough use.Perfect for the back woods and fishing communities of Canada.

 There is a good chance Cooey would not have sold out to Winchester in 1961, except for the untimely death of the owner at the time.Who was old H.W. Cooey’s son.