Originally Posted by
beech333
Do you have any pictures with the chain off of the portacatena? I'm just curious if it is smooth or if it has teeth to hold the chain. I don't know much about them, other than learning recently that one of my frames has holes for it.
It's smooth:
All of Campy's model 1010B dropouts came drilled for the portacatena, so you'll find them on many makes of that era.