2013-12-18: Cultural and historical heritage of the Bulgarian lands

2013-11-22: Christmas 2013

2013-11-22: 15 Years Sofia Metro (2013)

2013-10-27: 25th Anniversary of Society Green Balkans

2013-10-27: Cats (2013)

2013-10-26: Orchids

2013-10-25: Sport Jubilees

2013-09-12: Diplomatic Relations Bulgaria - USA, 110th Anniversary

2013-08-30: 70th Day of Death of Tsar Boris III.

2013-08-15: International Philatelic Salon SOFIA 2013

2013-06-17: Bulgarian Regions (IV) - Southwest

2013-06-12: Arrival of Cyril and Methodius in Great Moravia

2013-05-30: Space Flight of Alexandar Alexandrov

2013-05-30: SOS Children's Villages

2013-05-28: Ivan Rilski University of Mining and Geology

2013-05-22: Biosphere Reserve Mantaritza

2013-05-22: 200th Birthday of Richard Wagner

2013-05-14: 125th Anniversary of Bulgarian State Railways

2013-04-24: Europa (C.E.P.T.) 2013 - Postal Vehicles

2013-04-23: 65 Years Football Club PFK ZSKA

2013-04-16: Victorious Conclusion of the War in the Balkans

2013-04-12: 50th Anniversary of First Woman in Space - V. Tereshkova

2013-04-05: 100 Years Football Club PFK Slavia

2013-03-29: Greeting stamps

2013-03-29: 100 Years Football Club PFK Cherno More

2013-03-10: 70th Ann. of the Rescue of the Bulgarian Jews

2013-03-05: 135th Ann. of the End of the Russo-Turkish War

2013-02-28: 130 Years Management of Coastal Waters

2013-02-01: 25 years Bulgarian Antarctic Station

2013-01-04: Tourism Advertising