Netherlands Historical medal 1942 Opening of the Maastunnel Rotterdam - By M. Kutterink. Made in Iron due to metal shortage in WWII. 106.7g - 70mm Obverse Personification of the Rotterdam city maiden seated at centre, surrounded by allegorical figures representing trade, traffic, and shipping; shield of Rotterdam below. Reverse Stylised map of the Rotterdam harbour plan with the trajectory of the Maastunnel clearly indicated. Commissioned by the Dutch ''VPK'' Society in 1942