"Septima 5" ceiling light, Louis Poulsen, Denmark ca 1929.
A total of nine glass shades in part mat polished, part clear glass, white metal fixture, diameter 50 cm.
The large upper shade is mounted upside down, electrical function not guaranteed.
The lower shade (marked K on the drawing) is missing.
Tina Jørstian, Poul Erik Munk Nielsen (ed), "TAEND! PH lampens historie", Gyldendal, Denmark 1994. Pp 237-239. The Septima lamps were developed under a number of years in 1927-31. First came the model wth clear glass shades, in 1929 the model with amber coloured shades was introduced and in 1930-31 came the one with pink shades. The smaller version "Septima 4" was introduced in 1931.