Pine base. Brass adjustable stem and white painted metal shade. Stamped Artek Aalto. Design Made in Finland. Model called "floor-reflector" from 1937-38. From an original 1930's interior of a house from Pori, nearby Villa Mairea. A similar model is present at Villa Mairea, more precisely in Maire Gullichsen's ateljee room.
There are many versions of this lamp with a wooden base, but examples with an aluminum shade are very rare.
Produced by Artek.