This Marlin manufactured finger lever spring is for the model 39 lever action rifle in 22 rimfire caliber and is in very good condition with light wear.  (file photos)

Note: Marlin model 39 lever action rimfire rifles in 22 caliber with the following serial numbers have beeen observed with this part: S13699 & S16012

Note: If this part is sold out, the listing under the Golden-39A will work as a substitute