| Ref |
country name |
capital |
currencies |
continent |
flag |
| CBD | CABINDA on to the stamps | Cabinda | CFA franc = 100 centimes | Africa |  |
| CEY | CEYLON on to the stamps | Colombo | rupee = 100 cents | Asia |  |
| KHA | CHAKASSIEN (RUSSLAND) on to the stamps | Abakan | ruble = 100 kopecks | Asia |  |
| CLE | CHILE on to the stamps | Santiago | Chilean peso = 100 centavos (until 1960 and from 1975), escudo = 100 centésimos = 1000 milésimos (1960-1975) | America |  |
| CHI | CHINA (VOLKSREPUBLIK) on to the stamps | Beijing | renminbi yuan = 100 fen | Asia |  |
| CIS | CISKEI on to the stamps | Bisho | rand = 100 cents | Africa |  |
| COO | COOKINSELN on to the stamps | Avarua | Cook Islands dollar = 100 cents | Oceania |  |
| COS | COSTA RICA on to the stamps | San Jose | Costa Rican colon = 100 centimos | America |  |
| CUW | CURAÇAO on to the stamps | Willemstad | Netherlands Antillean guilder = 100 cents | America |  |