Considered the finest brace ever made. Stamped "YANKEE NO. 2101" and "NORTH BROS MFG. CO. PHILA, PA USA" with the patent dates reading "PAT NOV 6 23" and "JAN 13 25" at the base of the chuck's collar. The "YANKEE" print on the head appears completely intact, bright and vibrant. Excellent overall condition noting typical 'toolbox' wear. Holds both square shank and round bits.