A philatelic term referring to an envelope with a postage stamp that was issued on the first day the stamp was officially available.
डाक टिकट के पहले दिन जारी की गई एक लिफाफे।
English Usage: The collector showed me his prized first day cover from the 1960s.
Hindi Usage: संग्रहकर्ता ने मुझे 1960 के दशक का उसका बहुमूल्य प्रथम दिवस कवर दिखाया।
pratham divas cover, pratham divas kavar, pratham divas kaavar, prathm divas cover, pratham divas kavr, pratham diwas cover, prathm diwaz cover
