Mid-Century Wall Sconce by Louis Kalff for Philips - 1960s Industrial - Wall Lamp - Vintage This piece has been attributed based on archival documents, such as vintage catalogs, designer documents, or other documentary sources. Dimensions: Ø 15 cm, H: 10 cm Material: Metal This piece is attributed to the mentioned designer/maker. It has no attribution mark and no official proof of authenticity, however it is well documented in design history. I 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.