Italian glass, crystal and brass ceiling lamp mod. Delta, by Sergio Mazza and produced by Artemide, 1950s. Ceiling lamp mod. Delta, large size, composed of opal glass in the upper part, details in satin brass and pressed crystal in the lower part. Designed by Sergio Mazza and produced by Artemide. 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.