Link to the Image Source
Metropolitan Museum of Art

Artwork Details 

Title: Henry Peters Gray
Dated: 1842
Medium: Watercolor on ivory in silver locket
Dimensions: 2 1/32 x 1 19/32 in. (5.2 x 4 cm)
Location: Metropolitan Museum of Art
City, State: New York, NY
Notes:
Bequest of Florence de Noyon Gray, 1947