Higo Zogan stamp

I've been researching this method on/off for over a year. I took a short workshop at Wrought Academy from Jim Austin using the techniques associated with Koftgari which uses a knife blade rather than a chisel. Took a very short workshop from Mitsusuke in Kumamoto, Japan. Finally, I took a Japanese inlay class in Seattle from Momoko in the fall of 2019.  All of these workshops covered little bits here and there, but most of the heavy lifting was done by the instructors. So... I decided to start with the basics and tie all these bits together. 

The first step is making a stamp for the heavier silver and gold that I will need to use for higo zogan. Higo Zogan and Kyo Zogan are Japanese overlay methods for steel, while nunome zogan is overlay for brass.  The techniques are roughly the same, but the tools are different.  I have made most of the tools, but the last challenge was the stamp for the heavier silver or gold.  

I've only tried it on thin copper and silver, but it seems to work very well.  This will be the basic segment of an inlayed aspen leaf.