The shift levers are Shimano Z401, while the rear derailleur is a Shimano Z501. Brakes appear to be Shimano Z640 but I'd need a better pic to be sure. This mix points to a Bianchi Strada, while of the crankset looks more like the Sugino VP on the 1986, than the SR on the 1985. I'd appreciate the serial number for my database. TIA.