Hi Bruce,
I looked at a lot of mic photos and also got measurements from people. It is true that both the mesh deforms on the die and also that I have seen a couple of slight differences in pictures. For instance, I have seen what appears to be stainless mesh, especially on some Telefunken labeled mics, and brass mesh. Also, our die, (which took a lot of work and tweaking) I am sure is not 100% like the original. I bet we are about 97% close, however.
It appears the same mesh setup was used on the U47 mics as well. All that being said, the headbaskets are already formed, but I will triple check this for future runs if we do more.