Memorial stone of the inauguration of the King William III; Memorial plaque with 4 provincial weapons along the upper edge with the national coat of arms in the middle. Center: inscription: see title; date: 12 May 1849; with crown; apple and (law) book. L. and r. in the vertical direction: other provincial weapons and the Luxembourg weapon. Completely outside on either side a column. M.o; v.l.n.: cannon with bullets; rudder of ship; anchor; Neptune; top hat; bible; harp; palette with paint brushes; aesculap sign; map with compass; shovel; hay rake; horn with flowers. Reverse: very irregularly shaped; Willem III (King of the Netherlands); Netherlands; 1849; marble (rock); h 63.5 cm x w 64.5 cm x t 3 cm x w 21 kg