Bill
32024
You have a very special set Doxa Sub 300T.
One is extremely rare the CYMA Profesional "Orange dial" you have on the bracelet . Seems to be the exact same watch as Doxa with the CYMA replacing the Doxa text. Don't really know much more other that it is known to have a CYMA movement. There is also the black version "Sharkhunter" also from CYMA.
The second one is the one we are all familiar with having the Aqualung logo.
Glad I got into collecting Doxa before you or I would not stand a cahnce against you.
You know I love these watches very much.
Bill
Picture below is the earliest Doxa Sub 300T I have seen and the only Sub 300T with 195ft depth. I have not found a single other watch in this configuration. Parts are not interchange with the Sub 300 (no T) for which the 195ft bezel was designated.