i found an old Prest O Lite acetylene torch in a pawn shop, then noticed the stem is offset to the side. That would indicate it is a lay down style tank wouldn’t it? I know this brand was popular for headlight torches.
Yep .... KK got it ..... my dad was a plumber ....SO ... I was one as soon as I was strong enough to carry the TOOL BUCKET .... Used one O dem MANY TIMES ......
I've got one just like it too. Great for sweating pipe! I believe it's called a B tank. I was taught to never lay any compressed gas tank on its side and then open it.