Pair of mid century modern glass flush mounts/ceiling lights from limburg, germany, 1960s

Stunning and rare pair of mid-century modern glass ceiling mount fixtures by limburg (germany, 1960s). Black round "iron" rings inlaid in thick hand blown transparent glass. Minimal and geometric design and high quality craftsmanship. They cast a wonderful light (see pictures). They perfectly work as ceiling lamps/flush mounts or as impressive wall lights/sconces. Original sticker on both lights still intact (model 2650). Cleaned, re-wired and ready to use (compatible in europe, uk, us, etc.). Each light requires one e27 light bulb, max 75 w. Led compatible. Height 12 cm; width 22 cm; depth 22 cm. Excellent vintage condition. The listed price is for the pair. Limburg manufactured many lamps which became design classics, such as the famous bubble glass lighting by helena tynell.