Four designs for elaborately plumed helmets

French School, early 17th Century Four designs for elaborately plumed helmets With numbers '1', '2', '3' and '17' on the mounts and with two subsidiary studies of helmets (1) and (2) pen and brown ink, watercolour, bodycolour, heightened with gold, pen and brown ink framing lines, the top margin shaped (4) 10 3/8 x 8½ in. (26.3 x 20.7 cm.) and smaller In Italian 18th century frames (4)