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 there, and to serve as translator. I can speak a little Italian but quickly got lost in the specifics. The owner, Mrs. Simona, is an awesome person as is her only full time employee Rosalia. Together they make a range of instruments including an adorable tiny 18 button chromatic, and the Italian organetto. They say that their most popular model is the Hayden. I am so grateful to have had this opportunity. I think you will like these awesome makers as much as I do.
You can find the video at