Reply Coupons Japan-Ryu-Kyu 1956-1972 19 ex. nr. 1 (1 not postmarked and 6 double postmarked) incl. 2nd day of issue, 3 ex. nr. 2 (1 double postmarked), 2 ex. nr. 3 incl. first day, 12 ex. nr. 4 and Ryu Kyu 12 ex. nr. 1, 8 ex. nr. 2 incl. first day, 9 ex.nr. 3 and 5 ex. nr 4 (2 double postmarked)