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. 

While all the pinbacks from this issue are rare, the team composites are extremely som this one picturing Patsy Donovan's Pittsburgh Pirates.  Sixteen members of the team are represented here, the pin itself graded GOOD 2 by PSA.  The image quality in this example is very strong, the reduced grade likely due to soiling on the paper backing, as well as oxidation at the curl and pin. An extremely rare piece.