As Lou said, it could be all of the things you mentioned to some degree. If these cards were scanned/photographed by different people in different places, then they lack any sort of baseline consistency, so it is impossible to tell if any issues are real or imaginary. The cards could have been printed in 1956 with wildly different coloring or it could simply be a case of a scanner's settings being too bright in 2017.
Last edited by JollyElm; 07-19-2017 at 06:08 PM.
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