Automatic translation from Danish.

Poul Henningsen (1894-1967) 'Double Ring Crown' with original 2/2 shades of amber 1-layer glass with bottom bowls, bronzed brass frame, socket housings and bakelite canopy. Stamped PH-Patented on rim and screen holder. Manufactured at Louis Poulsen in the 1930s. Literature: "Jørstian, et al.: Turn on!, the history of the PH lamp." Pictured and discussed on p. 195. Has age-related traces of use, one upper screen and middle screen with a glued crack, other middle screen with a small chip.