“Raising the Flag on Iwo Jima” by photographer Joe Rosenthal is one of the most iconic photos of World War II, and now a rare signed print of the photo is up for sale. The print is one of the prized gems at the Photographs Auction by Heritage Auctions on October 4th in New York. On the front of the print are four signatures: three by the only three marines in the photo who survived the battle (John Bradley, Rene…