You're right about some sets dates being best guesses.
I don't know on what basis the 1968 date was attributed. It may have been on the word of whomever supplied the photo/information, perhaps Richard Gelman or Larry Fritsch.
Coincidentally, I just ran across my own example of the uncut sheet while sifting through a box of stuff this morning that I'm planning to sell. I'll try to remember to list it on the B/S/T forum later this weekend.
Last edited by Bob Lemke; 07-07-2012 at 09:52 AM.
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