Twenty-five years of existence of the Masonic lodge La Vertu in Leiden; silver oval medal with eyelet. Front: helmeted Minerva with lance lays laurel wreath on an altar; on which are masonic tools and whose base is decorated with trowel inside laurel wreath with a circle. Reverse: inscription inside; Leiden; Johannes Josephus van Baerll; Dordrecht; 1783; silver (metal); striking (metalworking); l 4.7 cm x d 4 cm x w 3.5 cm x w 17.71 gr