This is a 650B made in 1976. I'm not sure if it was built as a 650, but that is how it came to me. I don't think the brakes would work with bigger wheels. TA/Stronglight, Suntour Gears, Milremo Pedals (changed for modern copy of Lyotard platforms) and bars, Mafac Brakes, OMO brake levers, Brooks B17 (swapped for more recent one), Soubitez dynamo and lights, original carriers, Stronglight headset and BB, 2 TA Water bottle carriers. Wheels were originally Sunlight hubs and unidentified rims, but replaced with Campag/Weinmann. Tyres were Michelin 650x42 but now modern repacement