German Gold 20 Ducat "Aureus Magnus Issues. 350th Anniversary Hudson in Manhattan" 1959 X# M69

Obverse
Denomination in center of 6-pointed cross, lilies in angles
Lettering: AVORUM NON MORITURA VIRTUS XX DUCAT AUREUS MAGNUS 980

Reverse
Hudson's ship
Lettering: A D MDCIX HENRICUS HUDSON INSULAM MANHATTAN APERUIT 1609 1959