Tina Jørstian and Poul Erik Munk Nielsen, eds., Light Years Ahead: The Story of the PH Lamp, Copenhagen, 1994, pp. 230, 240-42
Catalogue Essay
The design was conceived in 1926 and the patent application was mentioned in 1927, then introduced at the exhibition 'Modern Homes', Forum, Copenhagen, 1931.
designed 1926, produced circa 1929-1931 Opaque glass, patinated brass. 43 cm (16 7/8 in.) diameter, variable drop Manufactured by Louis Poulsen, Denmark.