Link to the Image Source
Metropolitan Museum of Art

Artwork Details 

Title: Self-portrait
Dated: 1830
Medium: Watercolor on ivory in gilded copper foliate case
Dimensions: 2 3/8 x 1 15/16 in. (6 x 5 cm)
Location: Metropolitan Museum of Art
City, State: New York, NY
Notes:
Dale T. Johnson Fund, 2006