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

1988-12-20: New Year 1989

1988-12-19: Tourism

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

1988-10-17: Transport

1988-09-26: Bears

1988-09-20: Kurdzhali Region Artifacts

1988-09-15: Anniversary

1988-08-22: PRAGA ’88, Prague

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

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

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

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