around circumference: PARCERE SVBIECTIS ET DEBELLARE SVPERBOS; across center: SIXTE POTES; across bottom: CONSTANTIA; across top in field: MCCCCLXXXI
Charles Armand Signol [d. 1875], Paris; (his estate sale, Hôtel Drouot, Paris, 1-3 April 1878, 3rd day, no. 181); Gustave Dreyfus [1837-1914], Paris; his heirs; purchased with the entire Dreyfus collection 9 July 1930 by (Duveen Brothers, Inc., London, New York, and Paris); sold 31 January 1944 to the Samuel H. Kress Foundation, New York; gift 1957 to NGA.
- Pollard, John Graham. Renaissance Medals. The Collections of the National Gallery of Art Systematic Catalogue. 2 vols. Washington, 2007: 1:no. 239, repro.