The circulation copper penny with Britannia on the reverse was struck for Queen Victoria between 1839 and 1859. It was discontinued in 1860 when it was replaced by a smaller bronze penny. This pattern was part of a rejected series of experimental coins prepared in 1859.
At centre, a crown; around, the monarch's legend VICTORIA D: G: BRIT: REGINA F: D: (translated from Latin: Victoria, by the Grace of God, Queen of Britain, Defender of the Faith); below, in smaller characters, the date 1859.
At centre within a laurel wreath the numeral 1 (for one penny).
[Book] Peck, C. W. 1970. English Copper, Tin and Bronze Coins in the British Museum.