imagine a hypothetical that we're talking about the good things with provenance in 1999 at Christie's /Sotheby's it cost $ 09.12 to $ 20-30 right now, Shapiro
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we see a growing interest in the artists of the first line and their excellent work and Suprematism is not in vogue right now, except for the super things from Kandinsky and Malevich
after a while the market these works wash
and as you can see , most of decent work are leaving the market to buy the current managers in Russia that 40-50 years hence will not be sold soon (unless you happen to 3D dept death devorse) and they turn their attention to the same price Suprematism and $ 100 thousand may not be so fantastic
This seems true of Bilibin as this is our only representative of the Art Nouveau style - which in the West is a giant money ( Munch Klimno Mucha and other Austrians ). Only Bilibin already and now gets to $ 100 thousand for a little work