1970s wall or ceiling lights from the Dutch lighting company Herda. The lights are made of orange hard plastic, possibly melamine, with a white opal glass diffuser. The light fixture uses an E27 socket, which is also suitable for LED bulbs. Some of the lamps are marked. I have official proof of authenticity such as vintage catalogs, designer records, or other literature sources and take full responsibility for any authenticity issues arising from misattribution, European Plug (up to 250V).The wiring of this item may be original and might need replacement, if not specified otherwise.