Commemorating the first UK Postage Due stamp issued on 20th April 1914. The cover bears a post and go type Royal Mail stamp inscribed Postage Due from a restricted issue available exclusively from the British Postal Museum Archive in London. Exceptionally, the cover was postmarked on a Sunday at Newcastle upon Tyne 20/4/2014, exactly 100 years to the day of the first British Postage Due The cover also bears decimal and pre-decimal sterling GPO postage due stamps tied to the cover with cachet Extra Charge To Pay Sunday 20/4/14 Postage Due we can offer this important postal history item.