Auction 321 - 332 Australian States & Commonwealth of Australia, New South Wales, St. Helena, Basutoland The ‘BESANÇON’ Collection - Day 2

1935: Surcharge Essay 7½ pi. on 4½ pi. red-brown & grey, in a sheet marginal block of four, with 7½ PIASTRES typographed surcharge in red, the block with positions 31-32/36-37 with position 32 showing error of English surcharge "¼" for "½" - and pos. 36 showing Arabic inverted "6" for "9" in surcharge; these were corrected when the surcharged issue was released. Superb quality with large part or unmounted og. The block being one of just two known with the variety as just two sheets were overprinted in red. Signed Todd AIEP. Cert. C. Hass (2006) - "one of greatest rarities of Sudan Airmails".