This bit is marked TBS and has a copper medium port mouth with loose cheeks. The bit is mounted with 14 pieces of German silver and a cross motif. The cheek pieces are made from 1/4 inch steel. It has a significant amount of weight and feel. This bit is just beginning to rust.
Measurements:
Mouth: 5 1/4 inches from ballbearing to ballbearing
Cheek: 6 7/8 inches
Bars: 1/2 inch thick
Weight: 1 lbs 4 oz