My first hand knowledge of these bikes were in 1976 when as a member of my university's cycling team in Guadalajara Mexico. (Universidad Autonoma de Guadalajara) I went to Mexico City to the factory (Windsor, aka Acer-Mex) and was custom fitted a Windsor pro bike. The builder of these bikes was a gentleman by the name of Remo Vecchi, who had worked for Cinelli in Italy, until he was brought over to Mexico to build these bikes. It is this reason I believe why the Windsor Pros are virtual copies of actual Cinelli's."
"At this time there was an extreme rivalry between another Mexican Bike company by the name of Benotto. It was an opportunity that Acer-Mex wanted to bring recognition for their bikes into the world market since it was they who had paid for a large percentage of costs for the world record of Eddy Merckx in Mexico City."
"Everyone new that Mr. Merckx was not really riding a Mexican bike but an Italian one, but since the general public did not know about this (bike swap) Acer-Mex/Windsor just went along selling these bikes (Windsor Pros) assuming the public believed he actually did ride a Windsor. Benotto had been trying to get M. Merckx to go with them instead of Windsor. But like they say In Mexico "with money dance the Dog". It has been thirty years since I graduated from my University and I still have my Windsor Pro. It is in mint condition and I still ride it.