Thanks for weighing in Stan! I'm sure we'll never know the whole story, but it is interesting to speculate about.
The 4-1/2 incher came to me in a bit of horse trading. I would have given more for it, but fortunately a deal was reached before I reached my max offer. As regards the 10" version....well, there is mention of that size in an old advertisement, but did they ever actually make any?