Mario Andretti signed helmet worn in preliminaries staged before the 2015 Indy 500, Andretti piloting a dual-passenger sky, a Bell brand silver helmet

Mario Andretti signed helmet worn in preliminaries staged before the 2015 Indy 500, Andretti piloting a dual-passenger sky, a Bell brand silver helmet featuring various decals and Andretti's name, signed in blue marker pen above the visor, complete with holdall inscribed Mario 15; sold with a letter of authenticity from a Charity Auction and a PSA/DNA COA (3)