YK55: Burma (Myanmar) - 1949: 100k
YK56: Philippines - 1987: 20k
YK57: Philippines - 1990: 15k
YK58: Philippines - 1966: 25k
YK59: Philippines - 1969: 10k
YK60: Philippines - 1983: 10k
YK61: Philippines - 1957: 75k
YK62: Deluxe sheet - CH Trung Phi - 1967: 940k
YK63: Deluxe sheet - CH Trung Phi - 1967: 1.080k
