This is a US-made Col-Max 333 made in 1941 (no other date stamp). Found in Australia, it had been stored somewhere very damp and required some concerted fettling. I’ve posted a thread on fettling this lantern here. “41” only. Petromax 500cp mantle. Ignore the Coleman vent nut. The lantern has been photographed with a Schott glass, but the lantern came with its original Col-Max glass. Up and running With a Sun-Flame reflector. This is a great lantern, and running very well! Tony