Jean Baptiste Perronneau (French, Paris 1715-1783 Amsterdam), Olivier Journu (1724-1764), 1756. Pastel on blue-gray laid paper, laid down on canvas, 22 7/8 x 18 ½ in. (58.1 x 47 cm). Signed and dated (upper right, in graphite): Perronneau / 1756. The...