Two casts, obverse and reverse, of a commemorative medal. Obverse: Inscription: 'NATVRAM . PALAGVS . MVTAT . QVANDO . ARIDA . PRAEBET . CLAVSTRA . RATI . QVAM . MOX . THETYOS . VNDA . LEVAT . ECCE . LACVM . SICCVM . NVNC . HVMIDA . CERNE . THEATRA . DVM . IVBET . AVGVSTVS . VVLT . MARE . FRAENA . PATI . A . D . XXVI . MAI . MDCCXXXIX.' (The sea changes its nature, when it provides a dry dock for the vessel and Thetys's wave soon lifts it up. See now a dry lake and a watery stage. While Augustus commands, the sea consents to be bridled.) Reverse: The dry dock at Copenhagen with a ship in it. Legend: 'CLAVSTRVM NAVALE AB AVGVSTISSIMO MONARCHA CHRISTIANO VI.HAVIAE ADORNATVM' (Naval dock equipped by the most august monarch Christian VI at Copenhagen). Exergue: 'A . D . XXVI . MAI . MDCCXXXIX.'