Christie’s Ammann to Sell Entire Art Collection
Christie’s said Wednesday it will also take over the sale of the remainder of this collection, including work by Robert Ryman, just two weeks after the Thomas and Doris Ammann Foundation announced it would sell an important 1964 Andy Warhol screen print of Marilyn Monroe of Zurich. , Cy Twombly and Francesco Clemente. “This is …
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