Extremely Rare, Mayo Patent Plow Plane, "The Boss", c. 1875
- Mayo's Patent Plow Plane
- Also known as the "The Boss"
- M.C. Mayo Boston, Mass. c. 1875
- Cast iron with bronze finish
- Wood fence
- One letter each M A Y O engraved in brass adjusting screwsFour irons, two of which are double ended.