The Roma had a longer slot below the binder bolt on the seat lug.
The Roma usually had better components and tubing; although 531, Columbus, & Falck could be found on both models.
The head tube lugs might also be subtly different.
Nick Zatezalo Atlanta,Ga
-----Original Message-----
>From: Hughethornton@aol.com
>Sent: Mar 30, 2006 2:19 PM
>To: classicrendezvous@bikelist.org
>Subject: Re: [CR]Legnano Gran Premio
>
>
>I have a Legnano Roma and a Gran Premio of almost the same age - 1960-63 -
>and both have Record derailleurs and Record hubs (engraved Campagnolo, not
>Legnano) and Universal brakes. The biggest difference in equipment is that the
>Gran Premio has a steel Legnano branded crankset, whereas the Roma has a
>Campy Record unit, and a plain seatpost instead of a Campy one. However, the
>most significant difference is the frame, although they look nearly identical -
>the Gran Premio is heavier and takes a 26.4mm dia seat post: the Roma takes
>27.0. I think that Romas were mostly 531 or Columbus, whereas the GP mostly
>used Falck tubing. The GP was an adequate race bike, the Roma better.
>
>Hugh Thornton
>Cheshire, England
>
>In a message dated 30/03/2006 16:21:30 GMT Standard Time,
>alfredo.marcantonio@btinternet.com writes:
>
>Hi All
>
>What's the difference between a Legnano Roma and a Gran Premio?
>
>Also any idea when steel Legnano panto'd hubs started and aluminium
>ones took over, or did they run
>
>concurrently?
>
>Thanks
>
>
>PS. Any CR folk going to the Ripley Bike Jumble on Saturday?
>
>Alfredo Marcantonio
>Twickenham Middlesex