Link to the Image Source
Metropolitan Museum of Art

Artwork Details 

Title: Portrait Of A Gentleman
Dated: ca. 1798
Medium: Watercolor on ivory in gilded copper case
Dimensions: 2 11/16 x 2 3/16 in. (6.8 x 5.6 cm)
Location: Metropolitan Museum of Art
City, State: New York, NY
Notes:
Fletcher Fund, 2006