Academics and collectors love William Wyon's 'Una and the Lion,' regarding it as among the most beautiful coins in the world. The design reveals an engraver at the height of his talents, determined to show the world that coin design was an art form as capable of greatness as any other. Only 300 to 500 copies of the pattern were ever issued so its rarity makes the coin exceptionally desirable when examples come to the market. More investors will be able to enjoy 'Una and the Lion' now it has been reissued as part of the Royal Mint's Great Engravers series.