Here is a 1927 American Caramel (E126) card of Ernie Cox.
On May 5, 1922 in a 6-3 loss to Cleveland, he pitched one inning, facing 6 batters. He gave up only one hit but walked two, while allowing 3 stolen bases and two of the runners to score to give him an ERA of 18.00.
That was his only Major League appearance.