Basin, Vietnam, 15th - 16th century. Artist/maker unknown, Vietnamese. Glazed porcelain with underglaze cobalt blue floral decoration, 3 3/8 x 14 7/8 inches (8.6 x 37.8 cm) 1966-218-1. Gift of Clayton B. Wentworth, 1966. Philadelpjia Museum of Art © 2009...