I bought one, ages back, gunshow find, $15.
Needed some work, but turned out to be a great little shooter. Crisp rifling, the trigger is excellent. Mine is a .22 and avgs 448 fps/Hobbies/slightly seated. Without seating it clocks abt 20 fps less.
Good find. Cocks w/one finger, carry and shoot all day. Groups are up there with the most accurate air guns on the rack (own around 50)
Good chance it could use a rebuild. PS is likely leather, silicone oil might revive it. I think you'll enjoy it
Before I had a chrony, used to bag rabbits and big bullfrogs with it