Suggest that you visit Gene a Del Mar divers in Mesa or Tempe? I assume he is still amoung us and still owns part of Del Mar...At one time had a world class collection and is very knowledgeable.
California Classic Equipment divers (CED) just disbanded-- Insurance problems for meets.
There are entirely tooo many vintage divers in SoCal.
I was stationed at Luke AFB during the Korean war...Only Califonias were diving --At San Carlos and some of the lakes.
FYI The late Boris Inocente opened the first Phoenix dive operation in about 1960
sdm