Mid-century ceiling or wall lamp by rudolf zimmermann bamberg (rzb). The lamp has a diameter of 26 cm and an opal glass shade, which provides warm, diffused light. The lamp features the patented dkn (clamp) system that rzb introduced in 1960 and is still in use today. The lamp has no damage and minor signs of wear consistent with its age. Marked on the bottom. a larger version (30 cm) is also available. See other listings. number: this item is unique and only one in stock period: 1970s designer/brand: rudolf zimmermann bamberg rzb origin: germany condition: with minor signs of wear conform age measurements: 12 cm high and 26 cm in diameter 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.