Anonymous Edo period (1615-1868), mid 19th century Three oban yoko-e erotic prints: each of a couple making love, the first depicting a young upper class couple; the second a courtesan and her client on a futon (quilt); the third a courtesan and her client on either side of a mosquito net; each sheet unsigned. Each approx., 25.5cm x 36.5cm (10in x 14 3/8in). (3).