This Marlin manufactured early variation rear sight assembly has a .055" wide elevator groove and is for the Golden (39-A and 39A) Mountie lever action rimfire rifle. This rear sight assembly is in very good condition with light wear. (file photo)

Note: Marlin Golden (39-A and 39A) Mountie lever action rimfire rifles with the following years of manufacture and serial numbers have been observed with this sight assembly:

Marked Golden 39-A Mountie: (1958) R16162

Marked Golden 39A Mountie: (1966) AB10631