Have you ever seen that corkscrew? I have not. Would be neat.

And yes, I have Manfred Zwecker's pinfire headstamp guides he made for shotshells and pistol cartridges.

There are some listed there that I don't have. And there are many many that I have that he did not have listed.

Some day I'll get them all on my website There are thousands.

Here are some neat ones: https://aaronnewcomer.smugmug.com/Cartridges/Pinfire-Manufacturers/Russian/n-zRW4HX/