I checked my 30th Ed. Blue Book, which is last year's Ed. The 74 is worth $295 at 100%, $250 at 98%, $215 at 95%, with no values below that. There is a 25% premium for pre war production. They were made from 1939-1952.
Looks like a vintage Weaver scope. I'm not sure how much it would be worth. Sometimes those things sell better separated.
DF
