Great Britain 1840 Penny Black (GB) Plate 3 SUPERB four margin Tiny Envelope Contrary to RegulationsGreat Britain 1840 Penny Black (GB) Plate 3 SUPERB four margin Tiny Envelope Contrary to Regulations. Tiny Envelope posted on Monday the 31st of August 1840 in Liverpool to Regents Park London. Penny Black Plate 3 placed on the bottom left of the entire Post Office regulations says the stamp must be on the top right corner. This envelope written by Edwin Atherstones to his daughter Mary Elizabeth who went on to publish and edit a distinguished book