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. 

Exceptional pin of catcher Jack O'Connor, author of a .263 lifetime batting average across 21 seasons.  Graded GOOD 2 by PSA, the pin exhibits some surface soiling and light wear, the image clear but slightly faded as is common with the issue.   A crisp Cameo Pepsin ad appears on the reverse, with some surface wear evident in the paper backing.