What erich said. It's usually on the rifle barrel.

This is an early post war 3000 model, probably from the mid-late 1950s.

Look for something like 11/56, 9/55, 3/57, etc. That's the month and year it was proofed.

Hunt with Class and Classics

Religion: A founder of The Church of Spray and Pray

Acquit v. t. To render a judgment in a murder case in San Francisco... EQUAL, adj. As bad as something else. Ambrose Bierce “The Devil's Dictionary”