Halston Hat Gifted By Andy Warhol

In 1972, Warhol made Halston Hat as a 40th birthday present for his friend, psychiatrist Robert Giller, and delivered it to him at a party at the townhouse of a mutual acquaintance, fashion designer Halston. Warhol completed the work by signing one of the Hamiltons in black marker after skillfully crinkling the bills and weaving them into the hall. Later, in 1979, Warhol included a photograph of Giller wearing the hat in his Andy Warhol's Experiences book and handed the doctor an autographed first edition. Giller's wife has kept the hat safe since his death in a car accident in 1996.

Giller and Warhol had to be good friends. According to Lesley Frowlick, Halston's niece, the pop art pioneer was a notorious skinflint: "I was startled to find that the bills used for the sculpture were $10 notes instead of $1 bills." Regardless, its current price tag has much more numbers. Selling price range: $800,000 to $1.2 million.

Price: $800,000 - $1.2 million