Overall: 2 1/2 in. (6.4 cm)
Container (box): 2 3/4 × 2 3/4 in. (7 × 7 cm)
marked: on edge: "MEDALLIC ART CO. N.Y. / BRONZE"
printed: on inside of box lid: "MEDALLIC ART CO. / NEW YORK"
Struck bronze medal commemorating sesqui-centennial of the New-York Historical Society; obverse with seal of N-YHS and legend "THE NEW-YORK HISTORICAL SOCIETY / INSTITUTED 1804"; reverse with image of N-YHS building on Central Park West and legend "THE NEW-YORK HISTORICAL SOCIETY / ONE HUNDRED AND FIFTIETH / ANNIVERSARY / 1804-1954"; in original cardboard box.
Due to ongoing research, information about this object is subject to change.