Mirror clock, Cornelis Bos, circa 1565–70

German, nuremberg; mirror clock; horology. Date: circa 1565–70. Dimensions: Overall: 16 × 6 1/4 × 1 1/4 in. (40.6 × 15.9 × 3.2 cm). Medium: brass, copper, iron. Collection: Metropolitan Museum of Art. Mirror clock MET DP340912