As a result, many countries take pride in producing beautiful and elegant stamps which also have promotional and educational value.
尤其郵票本身除了擔負郵遞使命外，還兼具了宣傳、教育與娛樂等功能，一枚郵票自設計至鐫版，偶有疏忽，即會鑄成錯誤，貽人笑柄，甚至損傷國家顏面，實不可不慎。