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First Day Cover

首日封

1、首日封

个装两 3、首日封（First Day Cover）：指在邮票正式邮行的首日，在一空白信封个上邮上一枚或枚邮票，盖上邮，通邮邮局寄出的信封。

first-day cover首日封;世博首日封;指贴上第一天发行的新邮票并加盖当日邮戳的信封

Friends First Day Cover朋友首日封

First Day Entire Cover首日实寄封

the First Day Cover首日封

Miniature sheet first day cover小全张首日封

First-day posted cover首日实寄封

stefanie Sun First Day Cover孙燕姿第一天

first-day y cover首日封

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