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I'd pay a small premium for a Cycle Mathewson. Please find me one.

AB backs are attractive too, if not especially rare. They do seem to get a small boost, but I agree with Andrew...if you just want a few along with your collection, then grab one that costs about the same as a common back (can be done easily with patience) Just don't expect to find every card available in AB backs and you'll be fine.


Pied 42's are the tough one for me. There are far fewer of those than Pied 25's but there are far fewer who care. WHile they should cost more due to their relative rarity, they might be sold as simply a Piedmont at a common price.

These cards just aren't T206 so the broad collector base hasn't warmed to every nuance in the set and chased them down throwing giant dollars towards unusual examples.