Tried a few of some old bikes like Weinman, but the bolts are too long so the levers (Campag Mirage) rattle about plus the bolt makes the hoods really uncomfortable. Might see if I can source a shorter nut n' bolt from my local hardware shop.
I've just successfully fitted some Campag old style Super Record with some old Shimano 600 clamps. Much easier to use as they use an allen key rather than the nut that needs a thin walled socket spanner to adjust.