Construction of the hike from Dokkum to Groningen; Silver Medal. Obverse: under bats of arms worn by two angels; the tow barge is pulled by the horse within the inscription. Reverse: inscription inside a coat of arms worn by two angels; Dokkum; Groningen; Stroobossertrekvaart; Johannes Lutma (1624-1689); 1656; silver (metal); founding; h 9.2 cm x h 8.2 cm x w 7.6 cm x t 0.6 cm x w 96.55 gr