Antique Walworth Stillson wrench

This Walworth Stillson Pipe wrench is between 12 inches to a foot and a half in length, still functions greatly, as well as being made by a Walworth Mfg. in the U.S. from 1892 - 1911 and is patented for the design which is still being used today. It has the number 51 E on the handle and has the number 8 in several locations.