Unless there is a variation in the positioning of the specific card backs, there is no extra value to any of these cards. Just ring all that up to a 1968 Topps quirk.
That means for each card, not compared to other cards in the set.
An example of what is a variation is in 1987-88 Donruss. The wax pack cards backs orientation are opposite of factory set cards. In that case, both version are so plentiful there is no extra value to either version
Rich
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