Originally Posted by T-Mar

This brand is new to me. I found a couple of Italian obituaries for Remo Tamagni, who passed away in 2019. They talked primarily about his cycling career and did not mention bicycle manufacturing or marketing. One did mention that his family had been in the ice cream business and that he retuned to it after retiring from pro cycling.

Conversely, I also found an advertisement selling another Tagmagni. The seller attributed it to Remo, and said the company was headquartered in Lodi, though it wasn't in business for very long. His frame had Matrix fork blades which puts it around 1986-1987. His serial number was 348, so it sounds like the company may have started not much earlier. If it was short lived, that may explain the lack of mention in the obitiaries.

The subject bicycle has the pre-1988 Columbus decal but sometimes framebuilders have excess stock to carry over. The only years that Dura-Ace featured single pivot brake calipers in combination with the rear derailleur having the blind P-pivot were 1989 and 1990. Assuming the components are OEM, my leading candidate would be a 1989 model year.

So, both bicycles are not too far apart in age and if what the seller stated is true, it's possible that these bicycles were only marketed in the late 1980s. Hopefully, Mr. Moss has more accurate information.