Thanks for sharing this wonderful find.

Did seller happen to mention if bicycle had been factory assembled, shop assembled or individual assembled?

Are pedali pista or truncated strada?

With regard to the Nitor flat rail saddle & pillar -

VB gives a launch date of "mid 1950's":

VeloBase.com - Component: Nitor

VeloBase.com - Component: Unica - Nitor Saddle Seatpost Combination

According to this history launch would have been 1959-60:

Unica + Nitor | saddlewax.com

Some of the earliest saddles were naked and salmon in colour.

Daniel Rebour drawing of the design: