The Two Penny Blue or The Two Pence Blue was the world's second official postage stamp,[inconsistent] produced in the United Kingdom of Great Britain and Ireland and issued after the Penny Black.

[citation needed] Except for its denomination, the design is exactly the same as the penny black and was struck from the same die.

[2] It was originally intended that the 2d blue be issued at the same time as the 1d black; the earliest postmark seen on one of these is 6 May 1840.

Printing of the revised stamps began on 27 February 1841 and were placed on sale in March.

[citation needed] Several differences exist in the post-1841 stamps due to watermark, perforation, paper and type variations.