Medal commemorating the Battle of the Four Days, 1666. Obverse: A naval action, a vessel on fire in the foreground. Exergue: 'PVGNANDO' (By fighting). Reverse: Within a garland of laurel carrying shields of the Seven United Provinces alternately with bundles of seven arrows, the inscription, 'MNEMOSYNON. SPECTANDAE. VICTORIAE. ET. VIRTVTIS. BATAVAE. CLASSE. BRITANNICA. QUADTRIDVVM. XI. XII. XIII. XIIII. IV. C1C. ICC. LXVI. ENIXIM. REPVGNANTE. FORTITER. PROFLIGATA. CAPTO. ARCHITHALASSO. NAVIBVS XXIII. QVA. MERSIS. EXVSTIS. EREPTIS. POSTERITATI. INTIMANDVM. ORD: FOED: BELG: F.F.' (This memorial of a splendid victory, and of Dutch valour exhibited in a fiercely contested engagement of four days with the English fleet, on 11, 12, 13 and 14 June 1666, which was bravely defeated with the loss of and Admiral taken, twenty-three vessels sunk, burnt or captured, the States of the United Provinces caused to be made for the information of posterity.)