Originally Posted by Vintage_Cyclist

There were some Professionals, very early on, that were manufactured by Acer-Mex and were essentially rebranded Windsor Professionals.

I've read that there was some coordination between Cinelli and Acer-Mex on building Cinelli-like bicycles in Mexico. However those stories appear murky and range from official collaboration to stave off the Japanese, a defection involving a long-time Cinelli employee, to no connection at all.

My understanding is these early Acer-Mex built Professionals had Columbus frames with Campy dropouts/fork ends and Campy equipment.