I have a pair of XL Jetfins I bought new in 1985, as well as a 1985 vintage Scubapro Mk 3 that I updated with a DIN connection and still use as a deco reg and 3 of my 23 tanks were steel 72's dating from the late 60's to mid seventies that I bought used in the mid 80's.
I also have a few 1958-1960 vintage double hose regs that are still in functional condition.
I also have a few 1958-1960 vintage double hose regs that are still in functional condition.