Opening of the Noordhollandsch Kanaal; in honor of Willem I Frederik; King of the Netherlands; Bronze Medal. Front: man's bust inside the inside. Reverse: Neptune with trident rides on a sea cart pulled by two horses through opened locks of the Noordhollandsch Kanaal; on the left is river god with water jug and oar among reeds; on the right crowned woman with coat of arms; representing the city of Amsterdam within a circle; cut off: inscription; Noordhollandsch Kanaal; Willem I Sluis; Willem I Frederik (King of the Netherlands); Johannes Petrus Schouberg; Utrecht; 1824; bronze (metal); striking (metalworking); d 6.4 cm x w 119.83 gr