French School, early 17th Century

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)