This used Mule's Foot / Scale Geometric steel stamp has neither a maker's mark nor a number stamped on it. There are only three characters marked on handle - LDB? (possibly the previous owner's initials). The knurling style indicates that it is likely made by Cal-Carved and is comparable to number 357. This tool measures 3/16" in width and 7/32" in height. There is some chrome chipped off and rust on this stamp, including on the tool face. This Scale Geometric stamp is a great example of why many serious leather stampers prefer these vintage tools. The crispness and precision of this hand ground tool is beautiful and it is a tool you would be proud to own. These old tools do not come available very often, so don't miss your chance to add a great tool to your collection. It still has many miles left in it.