Need help identifying Oceanic 1st stage

[kaes]

Can anyone help me identify this Oceanic 1st stage? I bought it with an Omega II 2nd stage and Delta 2nd stage as octopus. I thought I was buying a CDX or CDX5 1st stage. I now understand that's not what I have. Any help is greatly appreciated.

 

[Fishpie]

DX3 diaphragm

 

[kaes]

Much appreciated. How does this 1st stage compare with CDX and CDX5 units?

 

[Fishpie]

It's a slightly older model. I liked it...very stable and reliable.
I'm not an Oceanic expert....in fact the dx3 is the first Oceanic I have owned in years....huge improvement over their 1st generation effort, which I hated.

 

[knowone]

Well, you could be an expert.
Or just understand what you're talking about.