This Marlin manufactured third variation magazine tube band with the flat sides is designed for the .387" long notch on the intermediate Golden 39A Mountie lever action rimfire rifle and is in very good condition with light wear. (file photo)

Note: Marlin Golden 39A Mountie lever action rimfire carbine with the following serial numbers have been observed with this part:

Marked Golden 39A Mountie: (1966) AB10631