If I recall correctly those reflectors are zinc die-cast ("Zamak" or "pot metal"). The greenish-gold finish is dichromate surface passivation, an anticorrosion treatment also commonly found on carburetors. Any carburetor restoration shop that properly recoats carburetor castings will be able to redo these, if you desire.
The markings are definitely not factory. They are the type of marking commonly found on a part sitting on a shelf at a wrecking yard or on a table at a swap meet. I don't know much Swedish; I get "Right-side inner" from "Höger inre" by myself and Google Translate helps me get "On deck lid" from "på luckan", but I have no idea what "Dart 65" might mean.