Nice old 6" x 20" carbide tank, has high relief script, brass Prest-O-Lite plate on top, no gauge on bottom ( cannot be refilled if it has a gauge). $125
Very early, no patent date.
That is a Pres to light acentylene tank, not a carbide tank. The old tanks was can't refilled with acentylene gas.
That is Prest-O-lite. It needs a pressure gauge. I have been told that the tank companies will not refill the old tanks. The fullers earth in these tanks cake and will not hold the gas proper.
No problem filling this tank; they won't fill with a gauge in the bottom.
Thanks to MTFCA