My Bulgarian Model B is WaA 251 marked, and imported by Cole Distributors in Kentucky. It was not purchased from SOG. It is a correct number for the Bulgarian SN range (23427),and properly proofed, but I remain in doubt of the WaA mark on any recently imported weapon, and of SOG in particular. SOG recently tried to sell some post-war P-38 holsters with (fake) codes and WaA's as original Nazi holsters. They are, perhaps, innocent dupes, but I doubt any knowlegable distributor would "unknowingly" offer fakes for sale as originals. Anyone care to comment?