Issue: 100 years Carl-Zeiss-Foundation, Jena (Germany, Democratic Republic, 1989)

Tuesday, May 16, 1989, 100 years Carl-Zeiss-Foundation, Jena

Tuesday, May 16, 1989 Germany, Democratic Republic will issue: Se-tenant "Tenant of optical instruments" face value 135, Stamp "Interference microscope, "JENAVAL Interphako"" face value 50, Stamp "Twice-coordinates-gauge ZKM 01-250 C" face value 85, Se-tenant "Tenant of optical instruments" face value 135, Se-tenant "Tenant of optical instruments" face value 135, Stamp "Tenant of optical instruments" face value 85, Se-tenant "Tenant of optical instruments" face value 135, Stamp "Tenant of optical instruments" face value 50,