7/6/18 - This is a very rare Luger cleaning rod guide. My understanding is these were used by German police during WW2. Not sure if these were used during other time periods or if not just the police used them. There's a Mauser banner logo on this piece, which makes me think this could be made for the commercial market. Overall it's in excellent condition with Mauser factory original bluing. The muzzle is serial numbered "15" as well. Very cool piece and in minty condition. Guaranteed original and authentic.