2018 Limited Edition Silver Proof Set Black Box & COA 7 Coins and Silver Eagle. 2018 Limited Edition Silver Proof Set. Original Box, COA and Coins in Nice Condition. 90% Silver Kennedy Half Dollar.Westpoint Mint Proof American Eagle Silver Dollar. Up to 10% off BIN Price. Less than that will be auto declined. To combine more items you can take up to 7 days to pay. Please Allow up to 30 Days for Late Packages.