NEW YORK, NY.- On October 27 and 28 Swann Galleries will conduct a three-part print auction featuring material that is truly museum worthy. The sale begins on Wednesday, October 27 with more than 150 lots devoted to Whistler and His Influence, which offers rare and important etchings, drypoints and lithographs from the 1850s to the 1890s by the renowned printmaker. The auction continues the following day with Rare & Important Old Master Prints—one of the finest selections Swann has ever assembled—and a large catalogue of Old Master Through Modern Prints. Several of the Whistler etchings in the sale have not appeared at auction in decades, and many display his highly prized butterfly signature. Among these are a very early impression of Nocturne, etching and drypoint on Japan paper, 1879-80, likely one of the first etchings Whistler made upon his arrival in Venice in September 1879 (estimate $80,000 to $120,000