I just picked up an OM .357 Blackhawk, Ser. # 114XXX. Its very clean, though a couple of spots made me wonder if it had been re-blued at some time in the past. The shop said no, as it was a consignment . It came with a holster, and does show some very light holster wear, very light. Original grips, its very clean. Unfortunately no box. It says .357 Magnum. If it was a convertible, would it say .357/9mm? Just trying to understand what to look for.