Official Moo Duk Kwan® Pins vs Counterfeits Institute Admin Products December 29th, 2017 Comments 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: Receive notifications for all comments posted here. No comments yet. You must be logged in to comment.