High quality Italian maker window regulator assembly left side (NA-spec driver's side) on Fiat and Bertone X1/9s from 1977-82 with mechanical wind-up windows.
Also referred to as the window winder mechanism.
In model year 1977, X1/9s from serial# 56981 take this style unit.
Earlier cars used regulators whose cables are 2" shorter and mount in a slightly different orientation.