This is a terrific old steel wrench from the Baltimore & Ohio Railroad. It is prominently marked B.& O. in tall RAISED letters that are actually cast into it -- a really great display on a train room wall or over the fireplace mantel.
Condition is extremely nice, with some surface wear showing from use, but NO metal damage of any kind. The color is a great gunmetal gray.
SIZE is approximately 13-1/2 inches total length and 3/8 inch thick.
This wrench is marked for size: one end is 5/8 inch and the other is 3/4 (the numbers are worn but legible). There are no markings on the other side.
A fine addition to any collection of railroad shop tools and hardware!