RO China C.4/C.6/C.7/C.9/C.10/C.11/C.17/C.19 Commemorative Stamps
1923-1945 Republic of China Commemorative Stamps C.4, C.6, C.7, C.9, C.10, C.11. C.17 & C.19; 15 used, 9 mint and 1 Officially Sealed Cover 中华民国纪念邮票