I was given this old Decor first stage: DIN diaphragm. It is obviously old and unused for many years. I thought I could use it in the scuba classes I teach. Just for fun I put a second stage on it and attached it to a cylinder. It works great. It is very solid and has a turret head for LP connections. I would like to find a way to rebuild it (I have experience servicing regs), but I have so far found no information about this reg. Please see the photos. If anyone has any suggestions about getting parts, please let me know.