My 67D has had the same issue for many years. My Dad quit using it back in the 60's & gave it to me. I was just a kid & liked taking things apart. There was a broken slide lock spring in the trigger assembly. I had no idea how to get parts for it back then, so I shelved it & forgot about it. This past weekend I drug it back out to play with it & of course the slide still won't unlock w/o depressing the tab.

This gun is stamped as a Springfield by Savage Arms. The safety is a cross bolt in the trigger guard. I thought Dad told me he bought it around the time I was born....maybe late 50's, but I haven't seen anything yet that helps date it(other than SN or no SN).

Jeff