Michiel Adriaansz. de Ruyter; Single-sided medallion in brass ring behind glass on the eye and support ring. Front: man's breastpiece with chain of honor around his neck; slightly to the left within the inscription. Reverse: label with inscription; Gottfried Eichler; Berlin; 1666; gypsum; brass (alloy); glass; founding; t 1.9 cm x d 9.8 cm x w 122.50 gr