Dutch industrial wall lamp by Philips grey enamel white interior Diameter cast iron wall piece: 10.5 cm / 4 inches. 2 holes to secure E27/E26 This piece has an attribution mark, I am sure that it is completely authentic and take full responsibility for any authenticity issues arising from misattribution, Up to 250V (Europe/UK Standard).The wiring of this item may be original and might need replacement, if not specified otherwise.