OK, check this. Here’s what is supposed to be a 1941 Champion Kingfisher single. Other than maybe a couple character lines in the rear corners of the tank, this is pretty much identical. The transom clamp, exhaust tube, cylinder head, spark plug angle, etc. all match too.
http://m.ebay.com/itm/262071354472
Pretty sure you had it right the first time, Frank, along with a few others. What do you guys think?
-Ben