With three applications this Spring is the most specified part.
Parts such as the Headlamp (e2): Bulb(6v/3w), Reflector, Lens, Socket are included in the Gp100 1981 (x) United Kingdom (e02) Headlamp (e2) parts fiche.
The Headlamp (e2) is made up of components including this Headlamp Assy which is the most expensive.