Hello all, first time posting in this forum. I picked this up yesterday at an estate sale in Pennsylvania, along with some Luftwaffe pilots gloves. The photo is of the liberation of KL Buchenwald by 6th Armored troops (written Bushwald Germany on the back).i purchased it because of the historical significance and rarity. But I have no idea of who to approach with it, or what sort of value it may have. Any comments or suggestions are welcome. Pic measures 4 1/2 inches by 2 1/2 inches.

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