Ken,
That is a great resource, thank you. I'll refer to that link often when identifying satsukis. After reviewing it I think mine is the "Geisha Girl" variety. I don't know if mine were cutting or seed grown. I don't think the nurseryman I bought them from would even remember how he started them. They have nice sized trunks and appear to be fairly old.
John,
I did a search on the one you suggested, and I'm not sure it's a satsuki variety. In fact I couldn't find a color variation that matched mine. So for now I'll say that it's the Geisha Girl.
I'll be making multiple air-layers this summer from this tree. The nurseryman never pruned them and they have become leggy. But many of the long branches have off-shoots in all the right places to make the start of some nice trees.