Today I have this "Crosman Model 1377"
I have no use for her so she is out of the house. I knew it had a leak in the valve area & took it apart & oiled everything to see if that would help. It didnt, atleast I tried.
I found a page about the serial numbers & fact, and this is one of the first versions. The model was started in 1977 & I want to say this one is a late late '70s or early '80s.
It will need a seal or two replaced but nothing to bad if you know anything about them.
The stampings on the body:
Right: American Classic
Model 1377 .177cal.
Crosman Arms Fairport, NY USA