Robert A. Siegel
Robert A. Siegel, of New York City, was an auctioneer of philatelic material, particularly rare postage stamps and covers. The company he founded still exists and still bears his name.
Philatelic auctions
Siegel held his first philatelic auction in Kansas City, Missouri. In 1934 he moved his philatelic auction business to New York City and eventually conducted 756 philatelic auctions during his lifetime. In 1964 he conducted his first Rarity Sale.Siegel's subsequent auctions included world-famous classic postage stamps. In 1970 and 1980, he sold the unique British Guiana 1c magenta, for record prices.