Penny Black-World's first stamp postally used on cover 2nd Nov,1840

1840 PENNY BLACK  (BJ) 4 MARGIN ON COVER WITH RED MALTESE CROSS

The Penny Black was the world's first adhesive postage stamp used in a public postal system. It was first issued in the United Kingdom, on 1 May 1840, but was not valid for use until 6 May. The stamp features a profile of Queen Victoria.