On May 5, 2001, Bally's in Atlantic City hosted a gala party to celebrate the 70th birthday of Willie Mays. Offered here is an invitation to the party, and a special commemorative baseball cap issued to guests, each signed by Willie Mays. The invitation (7x10") has been signed by Mays in blue Sharpie (grading 10/10) on the insert card. NR-MT.  The  adjustable gray cap (no size listed) has been signed by Mays in black Sharpie (10/10) on the top of the brim. NR-MT