The obverse of the coin depicts the Lord Protector Oliver Cromwell as a laureated Roman emperor, with the Latin inscription OLIVAR D G R P ANG SCO HIB &c PRO [Olivarius Dei Gratia Res Publicae Angliae, Scotiae et Hiberniae etc. Protector] — Oliver, by the Grace of God, of the Republic of England, Scotland, Ireland etc., Protector, while the reverse shows a crowned shield depicting the arms of the Commonwealth with the inscription PAX QVAERITVR BELLO 1656 -- Peace is sought through war.
The current value of the coin in "very fine" to "extremely fine" condition is £27,000 to £54,000.[2]
A piedfort version of the coin with an edge inscription is known as a Fifty shilling piece. This is extremely rare, and there are very few examples as it is probably a pattern.