Fifty pence coin

Dimensions: 27.3mm diameter

Made out of: Copper, Nickel

Introduced: September 1st, 1997

The fifty pence piece has seven sides, making it a heptagon, albeit with the corners slightly rounded to allow it to roll in vending machines.

On the front of the coin is a symbol of Britannia. The rear as is typical on British coins features the Queen.

Special editions of the 50p piece are often made to celebrate special events.