 In the mid and late 1990s David held a series of improbable jobs.He was a private investigator for Kroll Associates, an expert at Sotheby's auction house, and investigative magazine journalist, and an Internet entrepreneur.In 1999, as the Sports Specialist at Sotheby's Auction House, David presided over the $22 million sale of The Barry Halper Collection, the largest privately owned baseball memorabilia collection in the world.