of round shape, the outside of the painted cover features the four gentlemen, a soldier, and a lady gaping at a painting, the inside of the cover unveils an erotic scene featuring the same soldier and lady during a sexual encounter, black interior and exterior, diameter: 8 cm (3 1/8 in.), height: 1.5 cm (5/8 in.), tempera and varnish over papier-mache, apparently unmarked