As mentioned above, I noticed that the population of PSA 10s had doubled for this set after the National. I had sub'd the first two Gems and they're still monstrously tough for a 40-year-old issue with only 4/705 = 0.57% Gem Mint 10s in the total population.
I am thrilled to report that I was able to track them down and procure both for my collection. I now own all four 10s from the '74 set and the two from the '78.
Of these two new 10s, I'm particularly stoked about the Rogan which has been one of the set's tougher cards. Until this 10 popped, the highest-graded was one PSA 8.5 (no 9s).
Enjoy their pristine beauty!
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