Victorian trade card from the late 1880s–1890s issued by Church & Co., New York, makers of Arm & Hammer Soda and Saleratus. This example is No. 17 from the “Fish Series”, featuring a detailed naturalistic illustration of a Tarpon (Megalops atlanticus) on the front, printed in soft greens and silvery tones typical of high-quality Victorian lithography. The reverse contains extensive promotional text explaining the Fish Series set of 30 designs and explaining the superiority of packaged Arm & Hammer soda over bulk soda, along with descriptive educational text about the tarpon species.

Card measures approximately 2 x 3 inches. Condition is good for age, with honest surface wear, light toning, and small edge wear consistent with 19th-century advertising ephemera; imagery remains clear and legible with strong period character. A desirable small-format Victorian advertising card, appealing to collectors of Arm & Hammer, baking soda history, fish/natural history imagery, and late-19th-century American trade cards.