Sotheby's will auction collections from two prominent dealers, Barbara Gladstone and Daniella Luxembourg, in New York on May 15. Gladstone's estate consigned 12 lots, including an Andy Warhol painting (est. $1m-$1.5m) and a Richard Prince work (est. $4m-$6m), following a competition between Christie's and Sotheby's. Luxembourg's collection of 15 post-war works, valued at over $30m, features pieces by Lucio Fontana, Salvatore Scarpitta, and Michelangelo Pistoletto, with Fontana's 'Fine di Dio' (1963) expected to lead at $12m-$18m.
The sales highlight the enduring market value of collections built by influential dealers, reflecting both personal taste and art historical significance. Gladstone's mandated sale of her entire collection underscores estate planning in the art world, while Luxembourg's carefully curated post-war works demonstrate long-term investment strategies. The auctions also reveal competitive dynamics between major auction houses and the role of third-party guarantees in high-value consignments.