Originally Posted by
Le Mechanic
One question I have is does anyone on here know anything about dating based off a serial number? There's another thread on a Rossin very similar to mine with no numbers? Mine has a B 121 stamped on the non-drive side dropout that looks like it was stamped by the manufacturer since it has the matching frame paint in the text.
Neat project and presentation.
As for date code, and not to take my answer verbatim though it appears this bike is very much original. Catalogs on the interewebs might depict the model and specifics. With that, you've identified the Campagnolo derailleur including crank date code. My guess you've nailed it but had inventory Campy parts from 1981/82 for its build.
Ironic but I just completed another build that has Super Record, crank date code 1981 and rear derailleur 1982.
Looking forward to seeing your finished project. Cheers