South Africa 1933 Remarkable High Franking Envelope

1933 Remarkable franking totalling 8s2d (1d+5x2d+11x3d+6d+4x1/-) on large linen backed cover sent airmail from Johannesburg to England. Likely enclosing a small sample consignment, the envelope is franked with adhesives from the 1930 Pretoria Roto issue tied by twelve strikes of the departure cds 8 MAR. Faults and folded at centre, most unusual, full of interest.