Bradford Exchange Martin Luther King 16 Commemorative Proof Coin Set Two Cases. PLEASE NOTE THESE ARE SILVER PLATED AND NOT PURE OR STERLING SILVER. BRADFORD EXCHANGE CALLS THEM ?PROOF COINS?. We have included photos of the Certificates of Ownership outlining the coins are plated in 99.9% silver. Purchased as part of a larger lot of historical memorabilia and coins, pins etc. As near as we can tell, this is the full set of 16 coins issued in 2018 by The Bradford Exchange. If there are more than 16, we have not found them. The cases are made of a beautiful red wood and one case has the metal tag stating what it is. The second case might have had one as well but we are guessing it fell off (wasn?t glued n very well). These coins were originally $50 each (in two easy $25 payments) and you can find some of them sold individually from $40-$60 here but we have not seen a full set of 16 sold - unless you include a Batman set of 8 that sold for $375 recently. We are figuring someone would want them as a set so we are not going to break them up just yet. Will ship USPS Priority with tracking to winning buyer. We will require a Signed Delivery Receipt BY THE BUYER upon delivery to protect both buyer and seller. We realize that requires buyer to be available at delivery but with porch piracy at its height during the holidays, it?s the safest option.