Finding a large boulder on the Pisberg near Amersfoort; calculation medal struck by order of the city of Amersfoort in honor of Mr. E. Meyster; copper octagonal medal Front: large stone; standing between four burning torches on a base with inscription under crowned coat of arms; wound around the two outer torches: pennant with lettering. Reverse: crowned coat of arms above pennant with lettering; in upper corners: inscription; Pisberg [BT: Amersfoort]; Jonkheer Everard Meyster; anonymous; Netherlands; 1661; copper (metal); striking (metalworking); l 3.2 cm x w 3.3 cm x w 10.65 gr