Here is the image I grabbed - other than the header lacking the larger round hole, is there something else you see?
The same header cards, bearing a 1970 code, were used 1970-1973. In 72 and 73 they appeared like this - no large hole. But the other 70s and 71s I see have the large hole. Is it out of the question this sort couldn't have been issued in 1970?
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