Attributed to Martino di Bartolomeo di Biagio, ‘Madonna and Child with Saint Peter and Saint Stephen [left panel]’, ca. 1400, National Gallery of Art, Washington, D.C.
overall size: 160 x 55.2 cm (63 x 21 3/4 in.)  original panel: 125 x 44.5 cm (49 3/16 x 17 1/2 in.)  painted surface: 92.4 x 44.5 cm (36 3/8 x 17 1/2 in.)