RobRoy, I wish you look on
ebay and get a used scanner - your photos are making me dizzy!
Equatorial Guinea is an African country and the little sheet is one of their stamp issues.
I think the three pink cinderellas apart of a "triptich" - three labels in a row. The three you show were in between the to stamps that wee commemmorating the Gotthard tunnel a couple of years ago. The year of issue was 1982
Peter