50 Pence

The British decimal fifty pence coin (often shortened to 50p in writing and speech) is a denomination of sterling coinage worth 1⁄2 of one pound. Its obverse has featured the profile of the current British monarch since the coin's introduction in 1969.

It was the first seven-sided coin in the world. Geometrically, the shape of the coin forms an equilateral-curve heptagon, or Reuleaux polygon, a curve of constant width, meaning that the diameter is constant across any bisection.

The British decimal fifty pence coin (often shortened to 50p in writing and speech) is a denomination of sterling coinage worth 1⁄2 of one pound. Its obverse has featured the profile of the current British monarch since the coin's introduction in 1969.

It was the first seven-sided coin in the world. Geometrically, the shape of the coin forms an equilateral-curve heptagon, or Reuleaux polygon, a curve of constant width, meaning that the diameter is constant across any bisection.