Hey, I know Rossi bikes.
No, they are NOT Rossin, or Rossignoli bikes.
Yes they are a legitmate bike, and not some re-labelled third party product.
Rossi is made in Povolaro, Italy (a tiny village that is one of three that make up the small city of Dueville in Vncenza, North Italy).
As "Rossi dude", I can also inform you that these bikes are genuine, hand-made Italian bikes of excellent craftsmanship and long heritage.
No one knows about them because (unlike the large companies like Bianchi, Rossin, Rossinoli, Colagno, etc. that pretend to be small handmade bike companies,) Rossi really is a small, historic, family-run business! As such, it is truly a collector's dream, as you can buy them for a song, since no-one is aware of their heritage.
Yours might have been made in the 1980s, but the company has been around for a very long time, and still has two shops, Bruno Rossi and Rossi Cicli, in Polvolaro.
Enjoy your Rossi. Keep it original. Treasure the Campy drops guides and Dubois lugs, and somewhat rustic paint (unless it is a chrome). Say things like Vesti la giuba
Rossidude knows Rossi!!!
Ride dude, ride!!!