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barrysloateA card cut in 1910 will have a certain aging to the front, back, and edges of the paper that will be consistent.
A card recently cut will have a front and back that has been subject to the elements for a hundred years, but the exposed paper around the edges will be fresh.
Also, a card cut in 1910 would have been subject to different cutting technology than a card cut recently, so under close examinations the edges will not match a vintage card. These are all minute differences, but in theory a card cut in say 1990 should not be holdered, and should be returned to the submitter with a note "evidence of trim."