Medal commemorating the Spanish fleet captured at the Slaak, 1631. Obverse: Detailed plan of country, inscription below on a cloth forming exergue, 'A. 'T LEGER VAN PRINS. B. GRAFF IAN SAVERT. C. EENIGE AEN GRONT. D. DE VLOOT. OP ANCKER. E.TROUPPEN. GEVANGENEN F. ONSE OORLOOGH-SCHEPEN. VISE ADMIRAEL VAN ZEELANDT M HOLLARE C. AERT METT'SCHIP VAN SYN EXCELLE C. C. ROGIERSZ. C. F. IACOBSZ. C. EEUWICH-RYCH C.I.D. COCK C.I.D. MOL. C.D. CORN. C.P.I.V.O.I.V.W.' (A. The camp of the Prince. B. Count John escaping. C. Some stranded vessels. D. The fleet at anchor. E. Captured troops. F. Our men-of-war. Vice-Admiral of Zeeland: Marinus Hollare. Captain Aert with His Excellency's ship. Captain Cornelies Rogerzoon. Captain Franz Jacobzoon. Captain Euwichrycke. Captain Jan de Cock. Captain Jan de Mol. Captain Daniel Corneliszoon. Captain Philips Joosten. V.O.J.V.W.) Reverse: Inscription, 'D.O.M. Hisp. classem ausp. Ord. Belgij. Ductu Fr. Hen. Pr. Aur. sub legato suo in Zeel. Hollario dissipavit intra Vianen & Stavenisse, expost nebula circumfusam vadisque allisam, in manus suorum omnes dedit, aut perdidit, solo Praefecto Com. Ioh. de Nassau sociisque.x.exceptis, LXXVI navibus & CIC CIC CIC CXL militibus captis, perque castra Principis Bergam ad Zomam gregatim deductis XIII September (Arms of Zealand) Anno 1631' (describes the scattering of the Spanish fleet by fog and shoal and its destruction, Count John of Nassau and ten comrades alone escaping, 76 ships and 4140 soldiers being captured).