After some dark days on this project it is nice to see some light. This burner is stamped 350 and 47 (Barnard?) The other burner has no markings. It is it's first fireing running at 10psi The rest of the project is not going so well, the other burner has a worn jet and the lamp has two fuel tap spindles snapped off and stuck fast so forgive me for dining out on such a partial victory. This burner took 3 days to dismantle and fettle but went back together in 10 minutes and pretty much fired straight up. Enjoy the pics.