This is a Twins jersey worn by Bert Blyleven during the 1987 World Series season. The Twins switched to this style of jersey at the beginning of the 1987 regular season. In 1988, Rawlings began using a white tag. There are remnants of a red Rawlings tag on the jersey, so this can specifically be dated to the 1987 season. Blyleven has signed the jersey. The jersey came directly from Blyleven and comes with a letter that he has also signed.