I have the 2013, 12, 09, 08 & 04 US silver proof sets. Boxes are in good shape, cases aren't scratched and all I can see is one little red dot on a cent in one of the sets....I'm the only owner of the 12 & 13 sets and can't find a single thing wrong with any of the silver coins, but I don't know how to grade. I'm looking to trade all five sets as a lot and can add cash if needed. I'm looking for fractinianal Buffalos, the commemorative Jackie Robinson and maybe even a HOF gold coin.....I have a few pre 1933 $5 gold coins and am also thinking about starting to add $2.50 and $10 gold coins that have nice eye appeal but not lots of numismatic value, nothing cleaned.