1988-12-29: International Stamp Festival Bulgaria '89 Sofia

1988-12-28: Test Flight of the Soviet sSpace Shuttle "Buran"

1988-12-20: New Year 1989

1988-12-19: Tourism

1988-11-28: Road Traffic Safety

1988-11-25: 40 Years Danube shipping Convention

1988-11-22: BULGARIA ’89, Sofia (I)

1988-11-17: 25 Years of the Bulgarian Radio and Television Company

1988-11-02: "Plovdiv '88" National Stamp Exhibition

1988-10-29: Eco-Forum for Peace (EFF)

1988-10-17: Transport

1988-09-26: Bears

1988-09-23: 300th anniversary of the uprising of Ciprovci

1988-09-20: Kurdzhali Region Artifacts

1988-09-16: Inter-Parliamentary Conference, Sofia

1988-09-15: Anniversary

1988-09-01: OLYMPHILEX ’88, Seoul

1988-08-22: PRAGA ’88, Prague

1988-08-22: 100 Years of St. Climent of Ohrid University

1988-07-27: Gallery of the Foundation "Lyudmila Schivkova"

1988-07-26: 30 Years of the Magazine “Problems of Peace and Socialism”

1988-07-25: Summer Olympic Games 1988 - Seoul

1988-07-25: Dimitar and Stephan Karadzha

1988-06-27: Icons from the Region of Kardzhali

1988-06-16: 25th Anniversary of First Woman in Space - V. Tereshkova

1988-06-14: Paintings from Dechko Usunov

1988-06-10: European Football Championship,W.Germany '88

1988-06-07: 2nd Joint Bulgaria-Soviet Union Space Flight

1988-06-07: EXPO'91, Plovdiv

1988-06-07: FINLANDIA ’88, Helsinki

1988-05-20: Zoological Garden of Sofia

1988-05-06: Birds (1988)

1988-05-05: Karl Marx

1988-04-28: International Children's Assembly "Banner of Peace" IV

1988-04-26: 125th Anniv. of International Red Cross

1988-04-08: 90th birthday of Georgi Trajkov (1898-1975)

1988-03-31: Post Office Anti-fascist Heroes

1988-03-25: 100th anniversary Bulgarian state railways

1988-03-22: 8th Intl. Civil Servants Congress, Sofia

1988-02-15: 110th anniversary of liberation from Ottoman Empire

1988-01-25: Protected water plants

1988-01-25: Khristo Kabaktchiev