Can you help to identify these frames, bikes or parts?

That seatpost, feels light as hell, and has the type of clamp I like, i.e. one that doesn't slip no matter what and easy to fine tune. No idea what it is though!

And what campag brakes are these? I thought mid 90s mirage, is that right?

the brakes are Campagnolo Veloce, the seatpost is a no-name copy of a USE. if by chance your breaking it I'b be interested in the 650c wheels