I first saw these in Dick E's collection: http://www.collectors-of-schrades-r.us/corners/DickE/pages/IMGP2487.htm then in Larry H's collection: http://www.collectors-of-schrades-r.us/corners/LarryH/pages/Larry's-Lockbacks (26).htm I just bought one of these thinking it is the one 7-OT to own if you are only going to have one in your collection with it's super-early 1979 four-pin ways and bonus year-setting etching. (Here's two pics taken by seller of knife. I haven't received it yet.) A few questions to those who might know: 1. How many of these 75th Anniversary etched 7-OTs did Schrade release? No serial # on them I don't think. Was it a limited edition or did every 7-OT they made in 1979 get this blade etching as an added bonus due to it's new-for-1979 status perhaps? 2. How often do you see these surface in mint condition with all original bling (box, paperwork, sheath) intact? Thanks guys, once again I know you will come through. People here know their sh*t!