From left to right:
Steel HP 100 (3440 PSI)
Unknown blue tank
Unknown skinny tank
Luxfer Aluminum 80 (3300 PSI)
![Image](http://farm4.static.flickr.com/3323/3422946350_ec62316c98.jpg?v=0)
I took a lot of close up pictures and added some notes to them. You can view them in a set I made on flickr: http://www.flickr.com/photos/trevorrowe ... 486961118/
Here is what I've been able to tell from the markings (the blue tank is much easier to read):
Blue Tank:
DOT-3AA2400
A645568 c
GALV
6 * 93+
I'm guessing the first line shows its a 2400 working pressure. The A645568 c (the c is in a diamond) is probably a serial number. GALV ~ galvanized and the 6 * 93+ is an old hydro stamp.
Skinny steel tank:
U.S. Diver
1CC3AA22?0 (22x0 PSI ? low pressure)
K72402 (serial?)
USD 67+
I believe the original hydro test was done on this tank in 1967!
![Image](http://farm4.static.flickr.com/3317/3422140679_4911af578d_s.jpg)
Anyway, I'm stumped. I can only guess what size they are. I just had them hydro'd. They both passed, but the guy at the LDS was completely useless in getting information about the tanks. He was so miss-informed it hurt. Thoughts? Anyone reconize these tanks?