You are most welcome, Mr. Newbern! The safety location on these guns can be used to date them as well. In 1929, the safeties were moved behind the trigger guard from inside the trigger guard (i.e. the infamous "suicide" safety). This was for both the Model 520s and the newer 620s. Your gun, with it's top-strap safety, is unique to the Model 520-30 and it's store-branded clones.

Last edited by Lloyd3; 05/23/15 09:55 PM.