Second stage ID

[pactrop]

I have a ton of old Scubapro and Aqualung second stages laying around. How do I find out what models they are?

 

[Scuba.com]

I'm not sure about the Scubapro models, but on most of my older US Divers second stages the first 2 digits are the year of manufacture. Of course, we are talking '77 and '78 on those ones. I don't know if that still stands true for the newer models.

 

[DA Aquamaster]

I have a ton of old Scubapro and Aqualung second stages laying around. How do I find out what models they are?

Send me pictures and I can tell you what they are.