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. 

Henry Francis "Farmer" Vaughn was a catcher, outfielder and first baseman who spent eight seasons with the Cincinnati Reds as part of a 13-year career.  In 1893, Vaughn batted .280 and drove in 108 runs, the star of a team that included Charles Comiskey, Bid McPhee, and Arlie Latham.  This rare pinback has graded GOOD 2 by PSA, perhaps a bit conservative.  The image quality is exceptional for the issue, some light foxing reducing the technical grade somewhat, though the pin would not look out of place in a higher-grade holder.