Interesting note - this jacket has a brass Talon main zip, a nickel plated Gripper Zipper chest zip, and nickel plated Scovill sleeve zips - all zips are oddly enough original. I believe the earliest HD Sportster jackets were typically decked out in all nickel Conmar zippers.
I'm also a recent convert to early 70s Harley jackets and love my AMF Sportster. All nickel matching Scoville's. Same heavy duty horsehide. Your's must have gotten built on a Friday or by one of new AMF employees. Some hardware from this bin, some from that and the bike is done!