6d ultramarine on pale greenish white postal stationery airletter of South Africa with 'SWAZILAND' overprint in red the two types with 'SOUTH AFRICA' at top and 'SUID-AFRIKA' at top (H&G FG12/13). Both fine unused examples.
6d ultramarine on pale greenish white postal stationery airletter of South Africa with 'SWAZILAND' overprint in red the two types with 'SOUTH AFRICA' at top and 'SUID-AFRIKA' at top (H&G FG12/13). Both fine unused examples.