SG 75b 1961 New Currency. 50c. on 5/-. Plate 1a South East corner block of 4. SUM.

Swaziland 1961 New Currency. 50c. on 5/- deep lilac and slate-black. Plate 1a South East corner block of four. Superb unmounted mint. Philatelic Federation of Southern Africa Certificate (1984). THIS IS AN EXCEPTIONALLY RARE BLOCK AS ONLY SIX SHEETS WERE EVER PRINTED. THUS THIS BLOCK IS ONE OF ONLY SIX PLATE BLOCKS IN EXISTENCE. (SACC 72a).