13 SEP. 1840 - REMARKABLE INCORRECTLY FOLDED 1d LETTERSHEET - stereo A10 (small faults), folded to show the POSTAGE panel on the front and addressed so the usual front design is upside-down, to Melbourne, Derbyshire with red MX cancels (2) on both POSTAGE and across the recipient's name, DERBY cds on the front and SHEFFIELD cds across the flap. Presumably it was folded to snugly fit an enclosure as the lettersheet has no message on it.
