3d brown on cream GV postal stationery registered envelope (H&G C4) used with added 1933 3d blue 'Centenary of the Abolition of Slavery and Death of William Wilberforce' issue (SG 172) tied by oval REGISTERED G.P.O. SIERRA LEONE cancel dated 1 MY 1934 with boxed 'FREETOWN' registration handstamp on front. Addressed to AUSTRIA with arrival mark on reverse. An uncommon issue used on cover.