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. 

Gourgeous example of John Pappalau's pinback.  Fresh out of college, Pappalau pitched two games in the majors, both with the 1897 Cleveland Spiders.  He continued to pitch in the Eastern League and the New York State League, finally retiring in 1913 at 38 years old.  Simply a beautiful piece, with outstanding image quality and very little evidence of wear.