Cancelled To Order (CTO) –
銷蓋票
Chinese zodiac stamp –
生肖郵票
commemorative booklet –
紀念小冊
commemorative postmark –
紀念郵戳
commemorative stamp –
紀念郵票
cover (postally used) –
實寄封
Customs Large Dragon –
海關大龍
Customs Official Mail –
海關公函
Customs Small Dragon –
海關小龍