[robanna]

OK, so there's a problem with the Luxfer 6351 aluminum form 72-87.

What does the original hydro stamp look like? Should it look something like 5A87 where the 'A' is not really an A but looks like one (if that makes sense)?

Is it only Luxfer tanks? and is it all sizes?

The reason I ask is because one of my tanks is a Luxfer AL100 and it looks like the original hydro was 5/87 but that's the one that was hydroed in 12/06. I'd think they wouldn't let that go if it was a problem. I have 2 others that are AL80's but not Luxfer (i don't know the brand but I'm pretty sure not Luxfer) with orginally dates of 4/87 (not currently hydroed).