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GB.QUEEN VICTORIA - 1840 MAY DATE MULREADY WITH DOUBLE-LINED MALTESE CROSS. 1840 (30 May) 1d black Mulready letter sheet cancelled by very clearly-defined double-lined Maltese Cross cancellation in bright red from Hitchin (this is the sole recorded example of this eye-catching MC and is listed and photographed in Rocckoff & Jackson), on reverse a Hitchen  MY 30 1840 cds in matching red ink and London transit and receiver pmks. Light folds. A rarity. Ex Littaur.