Official Moo Duk Kwan® Pins vs Counterfeits Institute Admin December 29th, 2017 Comments Products Solid silver and 14 karat gold Official Moo Duk Kwan® pins are available from USA Federation National Headquarters. Click to order. Read about counterfeits and knockoffs here. Post a comment Comments: 10/10/18 john neace commented: These pins are beautiful. The pins actually mean a lot , and have a proud history behind them. Reply 0 Show replies (0) Reply to john neace's comment... You must be logged in to comment.