2008 United Kingdom Royal Shield of Arms £1 piedfort silver proof coin. The obverse is the Queen’s portrait by Ian Rank-Broadley and the reverse is a shield of the Royal Arms by Matthew Dent. The edge is inscribed ‘Decus et tutamen’ meaning An ornament and a safeguard. Product issue 754 of 5, 000. Diameter 2.25cm, weight 19g.