Bicycle Tutor

Hi all, I just picked up a bike for free from a neighbour. Apparently it's from early 70s or even late 60s judging from the look of the saddle and the cottered cranks.
I'm specifically curious about the wheels, as they're Campy 36h hubs laced to tubular Nisi Toro rims. Besides the Campy logo however, I can't find any marking on the hub body that indicates the model or year of production. Does anyone here know what model these are just from looking at the picture? Any help is appreciated. Thanks!