Herb Pennock photo used for 1928 W504, Yuengling's, Tharp's Ice Cream etc issues. What's left of the caption on the reverse indicates that this was also the first photo of Pennock in a Yankee uniform. News accounts have Pennock arriving + suiting up at spring training in New Orleans on March 14, 1923.
The stamp on the reverse is Pacific and Atlantic Photos, Inc.
The card isn't mine, btw!