Great pictures. WOW
I knew you would buy the one Joe was selling on eBay for Buck... Now We know where 4 of these Prototype BuckMaster sheaths are. You,Bill Porter, Buck Factory Museum, and me... Only 2-4 more to find....
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"It's not who is right is who's left"
Mr Ed Parker
Very nice comparison pictures.
The only differences I could see, comparing your scabbard to the Bill's one, are the "pat. pending" marking below the word Buck and the black pouch.