I cast several of these planes years ago when I had an out door casting outfit that I made.
Now I cannot find a decent picture,and for some reason cannot delete this post. So,I'm stuck with this picture.
The engraving was done with the hammer and chisel method,but the reflected light makes it difficult to see it.
The casting was made of 90% old copper pipe fittings,and 10% pure tin. The wedge is rosewood.
The front sole of these type planes is always steel,attached with 2 steel screws,as seen. It helped to make the mouth very small.