I *should* have a 1600dp unit, in around the '72 range somewhere in my stash of parts. My stash, though, is fairly well organized. PM me Monday or Tuesday to remind me, and I'm happy to look for you. It'll be a loaner for you to make a copy of, as I'll need it for the complete set of tin that's hiding on the shelf.
I'm on the island for the weekend, otherwise I'd look this weekend.
-Dave