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Posted By: Gilbert Maines

Thank you Mike. Based largely on this information, but coupled with other inputs; my understanding on the potential for card fading is that it can be reduced by holder materials which contain either natural or additive filters for ultraviolet light. However, it is recognized that no filtering medium is 100% effective (so even with the best holder possible, it is unwise to leave your slabs poolside for weeks at a time). Also, the potential exists that fading of some cards, or maybe all cards, can be affected by visible light. However, since it is visible light that allows you to see things, any reduction in visible light will make your cards more difficult to see.

There is no deterioration in the effectiveness of holders with UV filtering attributable to time or use.

Do I have this right? Is there anything which you would like to add?