PORTLAND — The U.S. Postal Service is issuing a new stamp featuring a painting by renowned artist Winslow Homer, who produced some of his most notable work while living in Maine.

The Postal Service said the stamp features Homer’s “Boys in a Pasture,” an 1874 painting that shows two boys sitting in a field.

The Postal Service will unveil the stamp on its first day of issue on Aug. 12 at the Portland Museum of Art, which currently has an exhibit of more than 250 of Homer’s illustrations.

Homer produced some of his best-known works while living at a studio in Scarborough from 1883 until his death in 1910.