You are thinking of the early Gran Sport, which was top of the line until the Record came out. I think the OP is talking about the mid-70s to early-80s Gran Sport group.
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Flickr Albums
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70 Pogliaghi ItalCorse, 72 De Rosa, 72 Masi Gran Criterium, 75 Masi Gran Criterium, 77 Melton, 79 Bianchi Super Leggera, 79 Gios Super Record, 81 Picchio Special, 82 Guerciotti Super Record, 82 Colnago Profil CX, 83 Colnago Superissimo, 84 Fuso