My car had been retrofitted with some funky reversing lamps at some point in its lifetime (see pic). The conversion looked neatly done, with the lights located either side of the rear numberplate, and only someone very familiar with the marque would know they weren't standard items.
The lights are chrome plated, and I think they're cast from mazak (uck!).
The car had all the original rear light rubbers in place, only the lenses were absent. However, they had all gone hard and brittle so were useless.