Old tank, steel 76?

[Bowers]

I have a tank made in 69 that i got with some lp72’s. This tank however is a tad taller weighs the same and seems about a lbs more negative. Does that sound like an lp76? Or just a different brands version of a 72?
Also I can’t find any 76’s online. Are they hard to find? Are they worth anything?

 

[TrimixToo]

Not all 72s are the same size, or have the same buoyancy. This can be a challenge when wanting to set up a set of doubles 72s, which are nice for shallow-ish water.

 

[John C. Ratliff]

I had a steel tank which was just a bit longer than a steel 72. It was a 2475 psi stamped tank, and if my memory is correct, it was an 80 cubic foot tank (but that was a while back, like decades). So check the rated pressure, and if it is 2475, it may be a steel 80.

SeaRat

 

[TMurrr]

I have a tank made in 69 that i got with some lp72’s. This tank however is a tad taller weighs the same and seems about a lbs more negative. Does that sound like an lp76? Or just a different brands version of a 72?
Also I can’t find any 76’s online. Are they hard to find? Are they worth anything?

Pix! And detailed ones with as much of the stamps and markings visible as possible.