Well, I have added two more stoves to my growing collection. I have now got 4x 3 burner stoves, 12x 2 burner stoves, 1x 1 burner stove, 4x propane stove, 11x lanterns (2 are propane), 1x catalyst heater Picked these two up last night. The one is an undated 4M stove and the big one is 5/67 446 model. They both work. The only problem I had was with the large stove not having a blue flame on high, it was good on a low to medium flame, but once I went above it went more yellow/orange flame. Could be the fuel is old? Anyways, here are the pics! I have to pull apart the 4M and clean it as it is pretty greasy and as you can see, the previous previous owner had actually repainted the unit. And the first couple flame shots that are really high are when I first started it.