Thanks to help from people in this forum, I was able to locate and make contact with the owner of Concertine Italia.  Last Thursday, I visited the factory and spent a couple of hours talking with the two women who make pretty much every part of their instruments, with the exception of the reeds and reed blocks.  A lot of people helped me along the way.  I'm especially thankful to my new friend Enrico, who thought a visit to a concertina factory would be a good adventure and offered to drive me t