Thanks for all the input. Let me throw out another variable. I will be displaying my cards in the same room as my guitars. Optimal relative humidity for guitars is 40%-50%. I'm having some difficulty finding optimal relative humidity for baseball cards, but I've seen a couple of suggestions of 35%-50%. Does that sound about right? I hope so - makes it easier to take care of them both.
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EBay ID mjhenr02; eBay store name Swinging Bunt’s Vintage Baseball
Always buying and selling everything prewar, ESPECIALLY TY COBB, and also 1950s cards.
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