|Description||To commemorate the Society's centenary (1769 - 1869)|
Obverse: a circle formed by a coiled snake. Reverse: Experience, in loose draperies, standing, looking to left. In her left hand a crowned staff, with scroll entwined; in right an anchor. Near, a column, on the top of which a pair of scales, on the front the Netherlands arms surmounted by a crown. On the left of the figure an altar, with flames arising, on the front the Netherlands lion rampant, with a shield
|InscriptionContent||Obverse: SOCIETAS PHILOSOPHIAE EXPERIMENTALIS BATAVA ROTERODAMI CENTESIMUM NATALEM CELEBRANS. Outer inscription: IN MEMORIAM STEPHANI HOOGENDIJK FUNDATORIS; MDCCLXIX-MDCCCLXIX.|
Reverse: on scroll RERUM MAGISTRA; on shield: CERTOS FERET EXPERIENTIA FRUCTUS. In exergue: J.P. Menger f.