6d ultramarine on white postal stationery airletter of South Africa with long 'SWAZILAND' overprint in red the two types with 'SOUTH AFRICA' at top and 'SUID-AFRIKA' at top (H&G FG8/9). Both fine unused examples.
6d ultramarine on white postal stationery airletter of South Africa with long 'SWAZILAND' overprint in red the two types with 'SOUTH AFRICA' at top and 'SUID-AFRIKA' at top (H&G FG8/9). Both fine unused examples.