- A century of jewelry history in one stunning volume - More than 200 hallmarks help collectors with identifying pieces - Exceptional pieces from Art Deco, Art Nouveau, Modernist and Revivalist jewels Tadema Gallery was founded in 1978 by Sonya and David Newell-Smith in London's famed Camden Passage in Islington. They were successful photo-journalists who ventured into the field of 20th century abstract art...