Title: Pair-case quarter-repeating watch
Object type: Pair-case quarter-repeating watch
Date: ca. 1770–72
Artist: Watchmaker: John Champion 
Artist bio: British, 1730–1779
Artist nationality: British
Artist role: Maker
Medium: Outer case: glass and gold set with diamonds, pearls, emeralds, and rubies; Inner case: gold; Dial: white enamel with black painted Chinese characters and blued steel hands; Movement: gilded brass and partly blued steel
Dimensions: Overall (outer case, confirmed): 1 13/16 × 1 13/16 × 7/8 in. (4.6 × 4.6 × 2.2 cm);
Overall (watch, with bail, confirmed): 2 3/8 × 1 9/16 × 7/8 in. (6.1 × 3.9 × 2.3 cm);
Diameter (back plate): 1 1/8 in. (2.9 cm)
Classification: Horology
Credit line: Gift of J. Pierpont Morgan, 1917
Department: European Sculpture and Decorative Arts
Repository: Metropolitan Museum of Art, New York, NY