Lot of 4 GS Watch Crystal Catalogs from 1948 and beyond #'s 48, 60, 65 & 201

Lot of 4 G-S Complete Catalogs of Watch Crystals. Also known as the Germanow-Simon Machine Company or Crystal Company until quite recently, these are catalogs from 1948 and beyond, or more specifically catalogs, 48, 60, 65, 201. All are original catalogs, not reprints, with the middle ones being in excellent condition for their age and the 48 and 201 not so much as the 48 has some moisture / coffee stains and the 201 is well used and loose. There are a couple of loose supplements in some of the catalogs as well. Images do a pretty good job of representing the lot and offers are always welcome.