3.5". No maker. During their single-season existence in 1969, the Pilots played their home games at Sick's Stadium and were a member of the West Division of Major League Baseball's American League. On April 1, 1970, the franchise moved to Milwaukee, Wisconsin and became the Milwaukee Brewers. A brief but interesting moment in MLB history. Professional baseball would return to Seattle in 1977 with the expansion team Seattle Mariners. Faint scattered trace of age spotting. Tiny rim nick at 10:00. Remains glossy, Fine. One of few known examples and one of the most sought after Pilots items. Paul Muchinsky Collection Book Example.