Welcome to ScubaBoard, the world's largest scuba diving community. Registration is not required to read the forums, but we encourage you to join. Joining has its benefits and enables you to participate in the discussions.
Benefits of registering include
Looks definetely like an Oceanic, but that hard-soft seat configuration I've never seen with Oceanic.
The manufacturer of Oceanic regs also produced for other brands similar models (f.e. Aeris I think).
Still I believe it's an Oceanic, but sorry, can't tell you the model yet......
I believe it comes from the era when oceanic had 3 1st stages.
Unbalanced piston, balanced piston and balanced diaphragm.....and that's what they were called.
Yours is the diaphragm.
Oceanic DX2