This is a Bemis & Call combination service wrench. One side used for pipe and the other side as a monkey wrench for nuts. Well used, with dents and nicks for character. Has very faint manufacturer lettering stamped that I read to say Call H & T. C. , which means Bemis & Call Hardware and Tool Company. This is probably between 1928 and 1939, after the company acquired the rights to the Coe Wrench company designs.
I did a light restoration with just enough to preserve the vintage look. I wire wheeled it, applied a coat of mineral oil to preserve the metal, strengthened the handle with epoxy in the cracks, and painted the wood handle with a few coats of durable enamel. It's a beast of a wrench that works as it should. About 15 inches long and heavy!