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In my limited experience, a printing plate of a common (even a Yankee) will get max value closer to the release date of the card. It goes down from there. If it's a rookie or potential star, then you can gamble.

For example, as a Royals fan I would likely purchase a printing plate of a 2013 Royals Lorenzo Cain printing plate but would have no interest at this time in a 2009 Royals Coco Crisp printing plate.