To date not much more of the history has been uncovered. There was contact (though a series of contacts) with a person who was/is involved with Honda that stated there are no records of the bike, rumors, but no records and ended with a response equivalent to "how the hell did you get your hands on it".
So we are still trolling around in the hope that someday, somehow, someone has new information.
Here are a few pics of (some of) the bike at this point.
The original frame had disappeared long ago and the frame that was used was junk.
So mods were made to adapt the proper frame to the engine as Honda had originally done.
The replacement tank also needed to altered to clear the larger head.
As the project moves along, in the hopes of keeping this troll for information alive, I will give an occasional update on the progress.
Thanks for your participation.
ps: I originally posted an incorrect model id, the cb250 came to be few years later. At the time I was not concerned about it as I was trolling for participation and any to get a response of any kind seemed except-able at the time.