There are two cool cameras in my home that I would like to show you. I bought a Duaflex IV from a yardsale on the side of a highway in Nowhere, Ontario. I gave that one to a friend but it was cool that it required replacement. This on came from a guy on Craigslist and it came with the original box and bulbs too.
The Duaflex IV was the last in this line, discontinued in the US in 1960. The type of film required is called 620 which is no longer produced. However, you can still get 120, shave down the casing, and fit it inside this camera. I’ve done it and it will take pictures.