The most reasonably priced component used on the Ce50et 1987 Riva Jog Taillight is the Washer(6a1).
This part-list fiche shows all the components that make up the Ce50et 1987 Riva Jog Taillight .
Some items from this specific schematic: Bracket, Licence, Screw, Lens Fitting, Lens, Tail Lamp, Cover, Rear Fender 3.