Exceedingly scarce pin from the 1896-97 Whitehead & Hoag set, commonly known as "Cameo Pepsin" due to the advertisement sometimes present on the reverse of the pins (though the pins are often found with or without Cameo Pepsin advertising). The first large set of pins to feature baseball players, more than 140 subjects are known and more are added to the checklist as they are discovered. Typically subject to image fading and other condition flaws due to age, the pins are quite condition sensitive today. 

Strong example featuring Ted Breitenstein, one of the examples that have been found with both Cameo Pepsin and Whitehead & Hoag labels on the reverse.  This example contains the Whitehead and Hoag label, clean and unblemished.  Some foxing mars the image somewhat, though the clarity is strong, and the contrast is exceptional for the issue.