The Cooey Model 84 was made by Cooey.When Winchester bought out Cooey in 1961 the Model 84 became the Winchester/Cooey Model 84.In about 1967 Winchester cheapened the Wincester /Cooey line like they did with the Winchester line in 1964.The Model 84 became the Winchester/Cooey Model 840 and the Winchester Model 370.In about 1973 the Model 840 and 370 were discontinued.The Winchester Model 37 A was introduced.
The Cooey Model 84 and the Winchester/Cooey Model 84 are the same well made shotgun.The Winchester/Cooey Model 840 and the Winchester Model 370 are the same design as the Model 84 but with less quality.Walnut stocks on the 84 ,birch or maple on the 840/370.Plastic and white metal on the 840/370 ,steel on the 84.
The Winchester Model 37A was an upgraded 370 in that it had a different forend and better wood(walnut).It still did not attain the quality of the Model 84.
All were manufactured in Canada.