Flash forward about 4 years I think, and Howard Lowery's auctions were in full swing, with at least 2 and sometimes 4 auctions per year. Imagine my surprise when this cel shows up in one of his catalogs.
I immediately pulled out my drawing and rushed over to the tiny shop in Burbank to compare my drawing to this cel. It is not an exact match, but it is only a few frames away - I don't recall exactly how many but at the time I did single step through the film to see just how close they were, and it is a matter of 2 or 3 frames.
So of course, I had to have it. And I do, it is happily on my wall with this interesting Xerox background that works pretty well with it.