Yes, you are right SPP, one is a 1975. The other is a 1973. I have a 1975 PL set that has a nice cameo dollar in it, but it's just not quite strong enough to make the UHC designation. Given enough time and money, I'd love to build a complete denomination UHC set from 1961 to 1975, or at least as complete as possible (I've never even seen UHC cents past 1971, but suspect they exist).