Keep Calm and Carry On - Reproduction of World War II Poster The poster is 59.5cm by 42cm (23 x 17 inches) - portrait. The HMSO original was published in 1939. The small wording at the bottom (which can be cropped off if desired) reads 'Facsimile of original WWII poster in Barter Books, Alnwick Station, Northumberland' to distinguish it from the various unauthorised copies. Price: £3.60 each plus p&p Buy Now