ArtExpert is advisor i.a. to:
Artforum Culture Culture Foundation
GULF PROJECTS. From Dark to Light
Winter Stiftung Hamburg
Art Thessaloniki
pac Private Art Collectors
Family offices
and particularly to artists, art and cultural foundations, museums and galleries

The achievements cover:
Concepts and strategies
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Advisory for loans from private property to museums
Curating exhibitions
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Complete services for catalogue production
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Wolfgang Siemens

Wolfgang Siemens, a great neo expressionist artist, we have accompanied for several years, died in February 2016.

Scion of the famous Siemens-family, he studied under Friedrich Vordemberge and Karl Marx at the Kölner Werkschulen, where he had lectured later on himself. He got widely known by exhibitions at the Kölner Josef-Haubrich Kunsthalle, and further solo exhibitions in NYC, Paris, Morocco. In 1986 he had destroyed his paintings to start again in 1990 with new painting. A comprehensive insight into his work and his life conveys the monograph:
Siemens – Der Maler/ The Painter, Cologne 2000.