German Democratic Republic - 236
236
German Democratic Republic 1988
10th Anniversary of the USSR-GDR Joint Space Flight
Multi-channel Spectrometer MKS-M
10pf multicolored
June 21, 1988
Multi-channel Spectrometer MKS-M
20pf multicolored
August 30, 1988
Multi-channel Spectrometer MKS-M
(4 × 20)pf multicolored
August 30, 1988