Tubs, the serial number on mine is a metal tag on
the transom mount. I had mine cataloged as a single
cylinder, but it appears to have turned into a twin!
Couple of photos here, but will email you more.
Tubs, here’s a link to a restored Sea King (same model number as mine)
that sold at auction. Looks like they put the instruction decal
in the wrong place. Had I known mine could look that nice,
I might have started working on it by now! https://new.liveauctioneers.com/item/6646902
I think the one I had must have been earlier as
it had tubes rather than a cast tower but that
hinge looking deal is exactly the same as mine.
Your thoughts as to its purpose. Did they come
with carrying handle that went there?
Many thanks for the pictures.
A "Boat House Repair" is one that done without having tools or the skills to do it properly.