Teams have been wearing commemorative patches since the early 1900's, some good, some not so good.
We think this is one of the good ones.
In 1985 the Chicago White Sox wore a patch throughout the 1985 season to commemorate 75 years of Comiskey Park. They celebrated the anniversary on July 1, 1985 by inviting eleven fans who had also attended July 1 in 1910. On that day in '10, the White Sox beat the St. Louis Browns 3 - 0. The men of the Pale Hose were not so lucky in '85, losing to the Mariners 3 - 1.