Hello again! It has been a warm 37 DegF the last couple of days in Minneapolis so I decided to shovel the slush from my elderly neighbors walkway out to the street. She came outside, conversation was had, I mentioned ice diving...now I have another matching pair of LP 72's. These tanks have been sitting in a corner of her garage since 1993 from what she can recall and she would not let me leave without taking them off her hands. They are a matching set made in June of 1971. Frankly, I don't know what to do with these tanks. I posted several months ago about the other set of LP 72's that I had doubled, those were made in 1973 and dive great. Last VIP on these tanks was in July of 1990 and they are still under pressure.