Made in czechoslovakia made in milk glass, metal, brass with aged patina 5x40w,e27 or e26 bulb good original condition us wiring compatible. wear consistent with age and use. 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, up to 250v (europe/uk standard).the wiring of this item may be original and might need replacement, if not specified otherwise.