Originally Posted by
verktyg
I have two 1974 Grand Jubile bikes. They both started as bare frames so there's no mistake about the threading. One has a French BB, the other swiss.
well I'm gob-smacked to learn they were going Swiss as early as '74, but just by 50% if your 2 GJs are representative.
I'd still bet a '72 would be French threading, but now anything's possible.
You'd never have known that GJ was ever in a garbage truck, nice job!