The initial reverse type for gold coins was the shield and crown motif, supplemented on the sovereign with a heraldic wreath. This was succeeded by a portrayal of Saint George killing a dragon, engraved by Benedetto Pistrucci, of which is on the back of this coin.
Weight: 7.988052 g (calculated from original definition)
Thickness: 1.52 mm
Diameter: 22.05 mm
Fineness: 22 carat = 916⅔ / 1000 (± 2/1000)
Gold Content: 7.322381 g = 0.235420 (exactly: 1320/5607) troy ounces or 113.0016 grains.