Kevin,
Not doubting the attribution for a moment, but would you be willing to point out a couple of key attributes of this frame that make it clearly a Windsor "Mexinelli", instead of the real deal.
One is seat post size--I'm assuming the Windsors made from different tubing that leads to the smaller size?
I think I can see some other things that look off, but would love to be educated...
Dean Kernan
Pomona, New York