I can't see any top tube model logo, nor any legible tubing decals; if you're going to be choosy about whether the bike has Vitus (as seller states in the description) or Reynolds, then I wouldn't get involved with it. It looks like a nice frameset, on the whole, though hardly anything on it is original equipment, except perhaps the Stronglight headset; whether it's worth $350 in NYC (where I am too) well . . . there's always negotiation. BTW, we have one 1977 Grand Jubilée here (spouse's), Vitus tubeset, and it's quite light, lighter I daresay than it would be in R531.