I'm admitedly not
real experienced with 1911's ( shot a few, and been through several myself [Colt,Springfield, RI] and currently have a stainless Springfield that's a
real keeper). But somehow, this thread is the first I'm seen or heard of the scratch on the
slide. Now that IS a sho 'nuff idiot scratch! The typical one of the frame is at least somewhat understandable IMO, but putting one way up on the slide definitely warrants the term "idiot" (again, IMO).
BTW, I've often wondered why some manufacturers havn't just machined a small groove in the frame, bypassing the whole "mark" thing. Probably some good reason that I'm not thinking of (other than the extra cost/effort), and besides, that would surely rankle the purists. Always seemed like a good idea to me though.