EUROPA91-GRE2C : Greece Booklet 4 stamps "EUROPA CEPT 1991 Europe and Space"
Europe and space : theme chosen for the joint EUROPA CEPT 1991 program by the postal administrations which are members of the European Conference of Postal and Telecommunications Administrations.
EUROPA91-GRE2C : Greece Booklet of 4 values 300 "EUROPA CEPT 1991 Europe and space"
Postmarked dated May 20, 1991
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