I have some familiarity with the Yarborough Knife project and have been taken through over the rules of ownership by the Special Forces Colonel who wrote them for Commanding General Doug Brown, then head of United States Army Special Operations Command in Ft. Bragg, North Carolina when the Yarborough Knife project was stood up.
The Yarborough Knife awarded or purchased by a qualified Special Forces Soldier (Green Beret) cannot be resold by it's original owner, whose name is registered with the serial number in an archived log, to anyone under any conditions.