This 2001 Northern Ireland silver proof piedfort one pound coin features the Celtic Cross & Broighter Collar. These symbols epitomise Northern Ireland and are one of a four design series representing the four countries of the United Kingdom by Norman Sillman.

On 28 March 2017, the circulated round pound was replaced by the 12 sided £1 coin. On the 15 October the round £1 coin ceased to be legal tender.

The coin comes in a presentation box with a certificate of authenticity.

Edge

The edge is not only milled but also inscribed. The inscription in Latin reads DECUS ET TUTAMEN which may be translated as “an ornament and a safeguard”. This inscription dates back to the first machine-struck coins minted in 1662 and was a device to prevent “clipping”, and was used on the first pound coin in 1983.

Llantrisant Mint Mark

On the milled edge of the coin is the Llantrisant mint mark – a cross crosslet. The shape of the cross alluding to Llantrisant, which translated from the Welsh means “Church or Parish of the Three Saints”.

The obverse bears the third UK coin portrait of Her Majesty Queen Elizabeth II by Raphael Maklouf, introduced in 1998.

A representation of the Broighter collar over a Celtic cross with a pimpernel flower at its centre. The design is the work of engraver Norman Sillman.