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2 Viking Space Missions to Mars Launch Cover + Photo FDC signed:Gerald Soffin :
$24.00
Viking Space Missions First Day issue 1978 15 Cent Vikings missions to Mars stamp on large photo of Viking om planet surface. This cover is hand signed by Mission scientist Dr. GeraldA. Soffien and a second person. I have included 2 launch covers on informative cachets with space stamps.
