Korea South 718a-720a imperf sheets

Korea South 718a-720a imperf (simulated perforation) sheets, MNH, $93.00. Michel Bl.314C-316C. Korean ancient fine art, 1970. The Fierce Tiger, by Shim Sa-yung, 1707-1769; Cats and Sparrows by Pyun Sang-byuk, 18th century; Dog with puppies, by Yi Am, 1499-?.