Vintage leather working tool - round knife. The piece shows wear and marks throughout. The round knife is marked but it is worn in a couple of areas. so it is hard to read. I can make out H.F. Osbo (I believe that is Osborne) Newark, NJ. The knife has a rosewood handle. The tool measures a little under 6" long and the blade is 4 1/2" from tip to tip. Please pm me for additional pictures.