Trio of signed baseballs from the 1988 Vermont Mariners; each ball from Seattle's AA affiliate includes a pre-rookie autograph by Ken Griffey, Jr. One ball is signed in black fiber tip marker, one is in blue ballpoint ink, and another is in purple ink. Each is an Official Eastern League ball, and Junior's autograph is nestled among those of his teammates, though each is easily discernible. The Vermont franchise folded after the 1988 season, which was also the only one in which they were affiliated with Seattle, making any memorabilia from Ken Griffey, Jr's tenure there rare and desirable.