Viking in orbiter (Guinea-Bissau 1977)

27 January (Guinea-Bissau ) within release Mission 'Viking' goes into circulation Souvenir Sheet Viking in orbiter face value 25 Guinea-Bissau peso

Souvenir Sheet Viking in orbiter in catalogues
Michel:	Mi:GW BL52A

Souvenir Sheet is square format.

Also in the issue Mission 'Viking':

• Stamp - Viking in orbiter face value 25;
• Stamp - Landing module on Mars face value 35;
• Souvenir Sheet - Viking in orbiter face value 25;
• Souvenir Sheet - Landing module on Mars face value 35;