Today’s Tossup of the Day #5

by Gilbert Keith

Thanks to Michael for this one (with modifications by moi):

When it is closed, it features four saints, two angels, two statues, and two pious followers. When it is opened, a group of pilgrims can be seen honoring a lamb under the most prominent figure. That figure, Jesus, is dressed in a flowing red robe; and he is surrounded on either side by Mary, John the Baptist, and Adam and Eve. FTP name this polyptich painted by Hubert and Jan van Eyck that shares its name with the treaty that ended the war of 1812.