George III Gold Sovereign Coin of 1817.
Obverse: King George III
Reverse: Saint George & Dragon
1817 is the first year that the Modern Gold Sovereign was issued.
How to invest in gold.
The premium on gold coins such as Sovereigns and Krugerrands is quite wide. This means you have to pay more than their weight in gold to buy these investments.
However, they are portable and easily stored, as well as being a collectable. You are, in effect, buying a piece of history.