This tools in this Geometric Border Stamp set are numbers E319L & E319R. The tools measure 1/2" in length and 3/16" in height. Stamped on this tool is either "E319L" or "E319R" and "Craft Japan". This is a great stamp set that produces a nice impression.
Craft and Co. of Japan produce fine quality leather stamping tools in unique designs along with some of the basics. Since their establishment in 1959, they have continued to develop tools in their own factory and have laid the foundation for the leathercraft industry in Japan.