Yeah, these were available in the tissue paper wrapped and in a little cardboard box version and the new "pliofilm"
Very nice set! I had the 55 proof set in the cardboard box years ago that I wish I never sold. I do have another set of these all in PCGS holders.
So long ago, I think I bought it on e-bay and it came in an envelope that said 1965, and just didn't have the seal. The coins are nice, just no seal...