Originally Posted by
Citoyen du Monde
The "diamond" chain stays were a standard part of Ugo De Rosa's arsenal. He used them for many years. You will not see them on other brands, but they are indeed common on De Rosa built bikes. These stays and seat stays are good proof that it is indeed De Rosa built.
They were both clearly De Rosa
https://lh3.googleusercontent.com/-1.../aIMG_2312.JPG
But were they all with diamond shaped chain stays ?
The seller is also selling another one somewhere else and this one (also presented as Molteni team) does not have them.
The "Merckx" (I verified and it was also presented as Eddy's bike in the Stalen Ross) has the diamond shaped but not so well shaped
Here :
https://lh4.googleusercontent.com/-K.../aIMG_2313.JPG
Having examined all détails, they were clearly rebuilt. I seem to remember one with the wrong year crank.
I've seen much better quality Kessels
Another De Rosa where you can see this shape
https://lh6.googleusercontent.com/--...%2520Copie.JPG
(My bike of the day in background)