Arnold,
I looked through all of the other pictures I have of this, and found this plate on top of the engine.
(Attachment Link)
Type 2 Nr. 111
So If yours is Number 108 and this one is Number 111 then at least 2 are accounted for. I do have pictures of another one. I will have to zoom in and see if I can read the plate on it.
Jim in Minnesota.
Thank you Jim for your detective work
Made a picture of my plate and the very nice adjustable Burner:
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