Stamped AB19. A late (last year?) lantern of this model. The early 1001 has the non-nickeled versions in the catalogues, but it doesn't appear in later catalogues. But this one is in polished brass, and from every detail I have looked over it appears to have been made this way. Either that, or someone has made a very thorough job in removing the nickelplating in every possible nook and cranny all over and in every possible detail. The "1001-type burner" has the best vaporizer there is for us who tinker with old stuff. It uses a two-tied mantle, but the vaporizer has a jet you can exchange, and the vapo is simplicity itself; just a solid, straight tube. No one can fail to clean that one. Vaporizer with jet mounted and needle in top position: And the central tube (that's what it's called in catalogues) without the air tubes assembled so you can see where the gas stream suck the air in: Some other views of the burner system. Vaporizer, then vaporizer with central tube and finally with air tubes and mixing dome (gas mixer according to catalogues): New sealings in the box: Assembled box, and vaporizer not fully screwed down so you can see the lead seal it contacts: Filling meths via the red lid at the bottom of the cage: Preheating: Test run before tying a mantle: Now I will try to find where I laid those two-ties as the burner cool off... Then it's out in the snow to see if the lantern perform as it's supposed to.