Brass, perforated brass.
Manufacturers stamp Taito.
Another example with 60cm diameter shade available: ref no. 2010009.
Provenance:
Porvoo Cathedral, Finland
Literature:
Aav, Marianne, Viljanen, Neva, 'Paavo Tynell ja Taito Oy', exh. cat. Designmuseo (Helsinki) 2005, inside cover, p.8.
Ref: 2010019