Uruguay 5 Centesimos (British Royal Mint Trial) 23mm diameter, Obverse a modified Sierra Leone obverse (c.1964) the portrait with added moustache, Reverse 5 Centesimos within a wreath, Z in the field within the figure 5, weight 4.95 grammes, plain edge, believed to be struck in steel, UNC and lustrous, the obverse with some light hairlines, Rare