set of seven vintage 1960s Philips ceiling lamps, iced glass and metal

Very nice minimalistic sconces / flush mounts by Philips Eindhoven. The lamp consists of 2 metal rings, one lacquered white and a larger one lacquered black. The lampshade is made of thick iced glass. 7 lamps in a set. 
 
21 cm H, 21 cm W, 21 cm D.