Originally Posted by
JohnDThompson
All of Campy's model 1010B dropouts came drilled for the portacatena, so you'll find them on many makes of that era.
I wouldn't be too sure of that. All of the 1010B's made
during the Portacatena's time were drilled for them, but the holes were soon dropped along with the Portacatena.
-Kurt