Originally Posted by
Charles Wahl
Aren't the BB cups marked? Should be if it's Campagnolo.
Yes, but it will say 35x1 either way. Stronglight used a gold color for a left-thread/Swiss fixed cup. I would expect a Swiss bike to have Swiss BB threading, but I suppose French is a possibility.
Since the frame takes a 26.4 seatpost, I'll bet the outer diameter of the seat tube is a French 28.0mm, rather than the more common 28.6 = 1-1/8". If not, it's a straight gauge 531 frame, rather than double butted, which would surprise me.
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"Far and away the best prize that life offers is the chance to work hard at work worth doing." --Theodore Roosevelt
Capo: 1959 Modell Campagnolo, S/N 40324; 1960 Sieger (2), S/N 42624, 42597
Carlton: 1962 Franco Suisse, S/N K7911
Peugeot: 1970 UO-8, S/N 0010468
Bianchi: 1982 Campione d'Italia, S/N 1.M9914
Schwinn: 1988 Project KOM-10, S/N F804069