An English Fifty Shillings coin, the only…

An English Fifty Shillings coin, the only one ever to have been minted, is struck in the year 1656.

It is a milled gold coin weighing 22.7 grams and with a diameter of thirty millimeters.

The obverse of the coin depicts Oliver Cromwell as a Roman Emperor, with the inscription OLIVAR D G R P ANG SCO HIB &c PRO -- Oliver, by the grace of God Protector of the Republic of England, Scotland, Ireland, etc..

The reverse depicts a crowned shield bearing the Commonwealth arms, with the inscription PAX QVAERITUR BELLO 1656 -- Peace is sought through war, while there is an edge inscription PROTECTOR LITERIS LITERAE NVMMIS CORONA ET SALVS -- A protector of the letters, the letters are a garland and a safeguard to the coinage.

Today, only eleven examples are known to exist, and they have a current value of approximately fifteen thousand to twenty thousand pounds each.