This Marlin manufactured early variation front sight with brass bead is for the earlier Golden 39-A Mountie lever action rifle which uses the longer front sight ramp and is in very good condition with light wear.   (file photos)

Note: Marlin Golden 39-A Mountie lever action rimfire rifles in 22 caliber with the following years of manufacture and serial numbers have beeen observed with this part:

Marked Golden 39-A: (1958) R16162

Marked Golden 39A: