Sovereigns

The Sovereign is a gold coin of the United Kingdom which replaced the Guinea and was a nominal value of one pound sterling, minted until 1604 and then again from 1817.
Sovereigns minted since 1817 have been produced according to the coin act of 1816 and then adjusted in the 1971 coin act.
Weight: 7.988052 g 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.