I have not seen this variation (or other variations in the 65-early 70s OPC sets that exist in the Topps sets) in the building of my OPC sets(a very slow process). I agree with Cliff that there are limited variations due to the timing of the printing, but also because of significantly smaller print runs for OPC cards versus Topps cards (OPC's print runs were between 1-5% of Topps print runs).
Last edited by savedfrommyspokes; 07-28-2014 at 11:27 AM.
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