GERMANY BUNDESPOST,6 DIFFERENT STAMPS-1991.MNH**
1991 The 750th Anniversary of the Duty of Chemists
1991 The 750th Anniversary of Hannover
1991 The 200th Anniversary of the Brandenburger Tor
1991 The 100th Anniversary of the Birth of Erich Buchholz, Artist
1991 The 100th Anniversary of the Birth of Walter Eucken, Politician
1991 The International Tourist Conference "ITB"