2nd Atomique Conference
Date: 01.09.1958 (not FDC)
Postmark: Geneve – 2nd Conference Atomique
Cachet: Plain – red text
Stamps: Single SG 590
2nd Atomique Conference
Date: 01.09.1958 (not FDC)
Postmark: Geneve – 2nd Conference Atomique
Cachet: Plain – red text
Stamps: Single SG 590