Medal; Silver Medal. Obverse: woman in Roman attire with diadem on head; representing Industry; holding a laurel wreath in her outstretched right hand and resting with her other hand on a coat of arms within an inscription; cut: year and signature. Reverse: inscription above crowned coat of arms within an oak wreath; to which three cartouches are attached containing a plow; a three-master and a steam engine. The medal is marked with the Mercury staff of the Rijksmunt; Haarlem; Hollandsche Society of Sciences; Oeconomic Branch of the Hollandsche Society of Sciences; Department of the Navy; Society for the Promotion of Industry; David van der Kellen (1804-1879) (signed by artist); Utrecht; 1861; silver (metal); striking (metalworking); d 5.3 cm x w 55.72 gr