Multimillion-Dollar Stamp Collection Up For Sale

Calling all stamp collectors! Check out bond guru Bill Gross’ multimillion-dollar stamp collection, which is up for sale. In addition to having six of the first U.S. stamps (valued anywhere between $500,000-$750,000), Gross also has a ton of other memorabilia, including a letter from the Pony Express, signed by co-founder William H. Russell. Check it out for yourself here!