I have five sizes of Bullard quick adjust wrenches. However they are marked 0, 1, 2, 3 and 3. The 0, 1, 2, and the largest wrench 3 are marked in the casting. The wrench that is marked with a stamping is just over two inches shorter than the cast marked 3. It has all the other Bullard marks, but no size cast into the wrench. I have always assumed it was an early sample as it is smaller than the cast 3 in all other ways besides the shorter handle as well as being larger in every way than the 2.