The obverse bears a group of Native Americans bartering with Peter Minuit with Dutch sailing ship in background, surrounded by border consisting of strings of wampum. Above, 1926; in exergue, MANHATTAN
The reverse bears conjoined walking nude male and female winged figures representing Commerce and Intellectal Life of New York City; in background, skyline of New York. Above, NEW YORK CITY / 1926; at lower left, A · N · S / NYHS; signed at right of exergue, HM
This medal was the 46th official issue of the American Numismatic Society. It measures 64mm in diameter and was struck by the Medallic Art Company of New York. The mintage was 50 pieces in silver and 100 in bronze.
Many thanks to Brian Holt for the images of the bronze medal and the Yale University Art Gallery for the images of the silver medal.
References: ANS 46, Baxter 353, Marqusee 252