Overall: 1 5/8 x 1 3/16 in. ( 4.1 x 3 cm )
stamped: on reverse: "S.H. HARTOGENSIS & SONS / NEW YORK"
Circular bronze pendant medal with hanger commemorating centennial celebration of the AASR at the Hotel Knickerbocker; obverse inscribed: "CENTENNIAL CELEBRATION 1807-1907 AASR HOTEL KNICKERBOCKER FEB. 24, 08"
Due to ongoing research, information about this object is subject to change.