This is a 20 coin lot of the 90% Silver, Statehood Silver Proof quarters minted at the San Francisco Mint (S Mint Marked). These quarters are less than pristine: they have been handled without gloves guiltyyy! It’s kinda a shame because they are incredible technological and artistic pieces. 5.63 grams of silver in each coin. Multiply times 20 and that’s 112.6 grams of Silver, ASW. Also known as 3.62 ozt (Troy ounces) of silver. They will come in a free plastic coin tube or plastic coin album sheet. Due to the varying nature of silver spot price, unless these are not as described, this item is non-returnable. Track Page Views With. Get your own free counter at Auctiva.