Marianne Brandt joined the Bauhaus metal workshop in Weimar in 1924 and later ran it — the only woman to lead the department.

Her lamps are built from the plainest geometry available: an opal glass sphere, a metal rod, a ceiling plate. The DMB 26 pendant of 1926, made with fellow student Hin Bredendieck, is little more than that — a sphere, three thin rods, a round plate, and nothing added to hide the fixing. The HMB 29 of 1928 sets two spheres of different sizes against each other, one frosted and one glossy.

Tecnolumen produces these alongside the other lamps of the same years — the BH 23, the SF 28, the HL 99 — as re-editions of the workshop's output rather than as a styled collection.