Better by the dozen, this box of 12 baseballs comes from the once very tough and expensive signer, Mark McGwire. All signatures were obtained by Mike Shannon while McGwire was playing for the Cardinals. Each ball is either Official Major League or National League, they are in EX to EX-MT condition and signatures are 8/10 in various ink on side panels. Ten of the 12 are dated by McGwire either 2000 or '01; the slugger retired after the 2001 season.