Plus, the third San Juan Poly/Graphic Triennial opens in Puerto Rico. Art Market Watch BOUGUEREAU AT SOTHEBY’S, PLUS, DERSHOWITZ COLLECTS by Jessica MizrachiSotheby’s New York does $20.6 million at its European art sale, plus Alan Dershowitz chastises the Met, and sends some art to public sale. Art Market Watch NEW YORK AUCTIONS OF AMERICAN ART by Jessica MizrachiTotals of $27.2 million at Christie’s and $34.eight million at Sotheby’s gross sales of American art. Art Basel 43’s public art sector, Art Parcours, takes over the historic neighborhood of St. Johann, and a public art competition involves roost in Zurich. Martin Scorsese’s …