Pour les connaisseurs de fusil Cooey s est quoi la difference entre le Model 84 et 840 ? Merci

Selon Wikipedia

The Cooey 84 is a shotgun manufactured by the H. W. Cooey Machine & Arms Company in Cobourg, Ontario, Canada (later acquired by the Winchester Arms Company). The shotgun was sold as model number 84 until 1967, and (following the acquisition by Winchester) as model number 840. The gun ceased to be produced in 1979. Today, the 84/840 is considered a collector's item to certant people who collect the old Canadian made firearms.