Multiple stepped shade made of opal flashed glass, which spreads light in all directions without glare. In the 30s and 40s of the last century, many surgeries, offices, schools, etc. were equipped with these lamps. The lamp is made of mold blown glass, 2-layer (white inside & clear outside) with typical glass bubbles inside the glass. I have official proof of authenticity such as vintage catalogs, designer records, or other literature sources 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.