I Have: ca 1975 Motobecane Grand Jubilee, silver with red, 531 "3 tubes renforces decal." Paint is quite good. 63 cm c-t seat tube, 59 cm c-c top tube.
I would trade this frame (with appropriate parts) for something a little smaller, like a 61 cm seat tube.
rhm-- what do you think of the 62x55 Shogun 600 (Tange 900) further up on this page? I'm in New Haven.
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The bicycle, the bicycle surely, should always be the vehicle of novelists and poets. Christopher Morley