It is not just the silver you are buying. Even "blank" ounces carry a premium over spot to buy. Check the SOLD listings for various silver ounces if you doubt that people buy them as collectables, for lack of a better word.  Sometimes for multiples of spot price. I assume for desirability and rarity. I thought these were significant and probably more limited. We here know the significance of Q. Demand increases when more are awake? Always redeemable for spot I guess.