Link to the Image Source
Metropolitan Museum of Art

Artwork Details 

Title: Jonathan Pinkney, Jr.
Dated: 1798
Medium: Watercolor on ivory in gold locket; hair reserve verso
Dimensions: 3 1/8 x 2 1/2 in. (7.9 x 6.4 cm)
Location: Metropolitan Museum of Art
City, State: New York, NY