I've had the folks over at the Cactus & Succulents Yahoo Group working on this one, but we all have to date is really that this is NOT a "Mammillaria hahniana cv. woodsii" as I had thought -- no downiness in evidence.
I haven't yet figured out how to include images in post here in this forum. I think I can manage to include a couple of links to pics over on my Flickr pages.
00040 -- Full View
00040 -- closeup