first day cover

Noun

 * 1)  A letter or card with new stamp, posted on the day that the stamp was first issued.

Translations

 * Danish: førstedagskuvert
 * French: enveloppe premier jour
 * Hungarian: első napi boríték
 * Italian: busta primo giorno di emissione
 * Norwegian:
 * Bokmål: førstedagsbrev
 * Nynorsk: førstedagsbrev
 * Spanish: