From the Second Coinage (1526-1544) of Henry VIII.
A British 1544 Sovereign (22s 6d), circulated but still in good condition, might fetch anything from £6,500 to £16,500 GBP.
A reputable coin dealer will be able to give a more accurate valuation.
The 1914 sovereign was minted in 5 different locations around the world. Its value can depend on where it was minted.
For example, an Ottawa mintmark 1914 sovereign is significantly rarer than one minted in London and therefore more collectable & valuable - 14,900 minted in Canada vs 11,501,117 minted in London.
At minimum, the coin is worth it's weight in gold (bullion value), currently around £180. If the coin is in exceptional condition, or is from Ottawa, then it has a higher numismatic value.
I have revised the valuations below, based on the 2014 Spink catalogue.
A British 1914 gold Sovereign (George V)(minted in London - no mintmark), uncirculated and in absolute mint condition could fetch up to £400 GBP. If it has been circulated but still in good condition, bullion value.
A British 1914 gold Sovereign (George V)(minted in Ottawa - mintmark = C), circulated but still in good condition, might fetch anything from £325 - £800+ GBP.
A British 1914 gold Sovereign (George V)(minted in Melbourne - mintmark = M), uncirculated and in absolute mint condition could fetch up to £400 GBP. If it has been circulated but still in good condition, bullion value.
A British 1914 gold Sovereign (George V)(minted in Perth - mintmark = P), uncirculated and in absolute mint condition could fetch up to £350 GBP. If it has been circulated but still in good condition, bullion value.
A British 1914 gold Sovereign (George V)(minted in Sydney - mintmark = S), uncirculated and in absolute mint condition could fetch up to £350 GBP. If it has been circulated but still in good condition, bullion value.
The values quoted are the best possible for the best specimens in their grades, but may be significantly lower due to varying demand for the coin and the prevailing economic climate. A reputable coin dealer will be able to give a more accurate valuation based on inspection of the coin.
To identify where the sovereign was minted, there is a handy wizard available here:
goldsovereignexpert.com/
The Sovereign was not reintroduced into the British currency until 1817.
After a break of a few hundred years, the Sovereign was reintroduced into the British currency in 1817. There was no 1802 Sovereign.
There were no 1804 British Sovereigns minted. The Sovereign was reintroduced into the currency in 1817.
There were no 1981 British Half-Sovereign minted.
There was no British 1974 Half-Sovereign minted. The first decimal British Half-Sovereign was minted in 1980.
There were no British Half-Sovereign coins minted from 1938 to 1979 inclusive
There were no British Half-Sovereign coins minted from 1938 to 1979 inclusive
There were no British Half-Sovereign coins minted from 1938 to 1979 inclusive.
There were no British Half-Sovereign coins minted from 1938 to 1979 inclusive
There were no British Sovereigns issued during the 18th Century. The Sovereign was reintroduced to the currency in 1817, replacing the Guinea.
There were never any British Two and a Half-Sovereign coins minted.
The Royal Mint did not produce any British Half-Sovereign coins from 1938 to 1979 inclusive.