Tobias G. Natter

In 2001, he was invited by the Neue Galerie New York, founded by Ronald S. Lauder and Serge Sabarsky, to organize the museum's first loan exhibition devoted to Oskar Kokoschka.

On October 28, 2013, he declared his dismissal from this function due to turbulence with his CFO Peter Weinhäupl and Weinhäupl's involvement with the Gustav Klimt Wien 1900 Privatstiftung featuring the Klimt collection of Gustav Ucicky, a prominent figure of Nazi filmmaking.

Natter was entrusted with the estate appraisal of major Austrian artists such as Maria Lassnig (1919-2014), Ernst Fuchs (1930-2015), and Anton Lehmden (1929-2018).

As part of his extensive writings, he published the current catalogue raisonné of the paintings by Gustav Klimt (2012) and Egon Schiele (2017) both of which are available in several languages.

In 2011 Natter was enrolled as a certified court expert for Austrian art from 1800 until today and is often consulted in provenance issues.