ALEXANDER BARTER served as Deputy Worldwide Head of Sotheby's watch division. In 2009 he co-founded the Black Bough company with Adam Withington and in 2019 published his first book, The Watch: A Twentieth-Century Style History (Prestel). The Chairman of Sotheby's International Watch Division, DARYN SCHNIPPER is one of the world's leading experts in the field of watches and has played a pivotal role in the sale of numerous important single-owner watch and clock collections.