Great Britain. 1840 (25th May) Entire. 1d. black. Plate 2. Lettered EE. Cancelled by a strike of the Maltese Cross in red and ‘Charing Cross’ in black. ‘PD MAY 25 1840’ backstamp. With Brandon Certificate (2007). THIS WAS THE TWENTIETH OFFICIAL MAY DATE THAT THE PENNY BLACK WAS IN ISSUE.