Vintage 1930's? Dayton Wire Wheel knock-off wrench.  The wrench is stamped Dayton Wire Wheel and has H103A cast into the handle.  There is also what appears to be a date cast into the handle... 3 27 36 ?  The octagonal opening measures 2-3/4" across side to side.  The overall length is approximately 13".  The condition is excellent.  There is still a good amount of original black paint remaining.  This wrench does not appear to have been used.  Nice addition to any collection.

Payment due within 3 days.  Buyer pays shipping.