This Quicklite is dated 6 10 (October 1926?) and apart from the pump on the tank, it looks like just about any of the other 1920s Coleman lanterns - to my eyes, anyway. On top of that, I can make neither heads nor tails of the model numbering system either - L, QL, LQ, 327, 427 etc., etc. - beats me... Superficially the lantern looks OK, but there's a dent in the ventilator rim and the burner is askew, so I presume it's been dropped on it's head at some point. What's the way back with this one? Some judicious bending of the burner back to the vertical? Or what?