Thanks for the additional photos.

I don't remember ever seeing front and rear reflectors mounted to the center pivot bolt of Campagnolo brake calipers.

Right, early Nuovo/Super record brakes were not aero.

Campagnolo Chorus had aero levers from the mid 80's. There may have been another one too.

VeloBase.com - Component: Campagnolo Chorus

I think that Campagnolo C-Record also made Aero/Non-Aero combo levers by the 80's.

VeloBase.com - Component: Campagnolo C-Record
VeloBase.com - Component: Campagnolo Corsa Record

As far as your seatpost. As I had suspected. It is a Nuovo Record type post. It should have been a simple round post, but aftermarket flutes were machined in, probably by Colnago.

Officially Campagnolo put flutes in the Super Record posts, but had tapered ends to the flutes.