Set of 3 mid century ceiling lamps by Raak, Netherlands 1960s

Set of three mid century ceiling lamps. 2 models R64 and one model R74.
Made of metal with a frosted glass diffuser suspended in a metal ring.
Thick chunks of glass have been fixed to the frosted glass diffusing the light in a unique way.
The small lamps measure 23 and 37cm in diameter and 10 and 11cm in height.

Overall the lamps are in good condition. Some signs of use and age on the metal and some discoloration on the diffuser of the two smaller lamps.