1937 (20.12.), commercial cover bearing strip/3 South African bilingual Christmas labels (instead of stamps) used from PORT ELIZABETH to Schiedam/Netherlands with tax-markings and futch postage dues 5c and 2 x 10c pale blue used on arrival with Schiedam cds. (18.1.38), nice and unusual (Tax Method: Margin System)

1938, Union Buildings Pretoria 2d blue and violet se-tenant block of four with 'Airship flaw' un upper left stamp, mint lightly hinged and very scarce, SG. £ 1.300 + (Tax Method: Regular Taxation)