Two penny blue Two penny blue The Two Penny Blue or The Two Pence Blue was the world's second official postage stamp, produced in the United Kingdom of Great Britain and Ireland and issued after the Penny Black. Initial printing took place from 1 May 1840, and in all 6,460,000 were printed from two plates until 29 August. Officially the stamps were valid for postage from 6 May but were only available from 8 May. It was first sold to the public at the London Inland revenue office on 6 May 1840. Except for its denomination, the design is exactly the same as
Penny Black of new red stamps, but a small number were printed in black. These are scarce. The stamps were printed in unperforated sheets, to be carefully cut with scissors for sale and use. As a result, stamps with badly cut margins, or no margins, are common and worth very little, while examples with four clear margins are rare and valuable, and fetch very high prices, especially if in mint condition. An original printing press for the Penny Black, the "D" cylinder press invented by Jacob Perkins and patented in 1819, is on display at the British Library in London. The total