...amateurs...pfft
L. Coes 6.5 inch Knife Handle Carrage Wrench.
Patented DEC 15, 1901 and APR 30, 1895.
Coes Wrench Co, Worchester Mass (on the reverse)
Was my grandfather's on my mother's side (blacksmith) and my father's. My brother got the 10 inch version.
Bill K