SANDY KOUFAX Autographed Baseball, Official Rawlings MLB National League Basebal

Authentic SANDY KOUFAX Autographed Baseball. Signed on the sweet spot in blue ink on a Rawlings Official MLB National League Baseball, William D. White, President. I obtained this autograph in person at a card show in the early 1990's. I will include a personal letter to certify the autograph .
The signature and ball are in Mint Condition with no blemishes . It also comes with the original box. Please refer to all the pictures.