A British 1909 22 carat gold Half-Sovereign (Edward VII)(minted in London - no mintmark), uncirculated and in absolute mint condition could fetch up to £95 GBP. If it has been circulated but still in good condition, it might fetch anything from bullion value to £70 GBP.
A British 1909 22 carat gold Half-Sovereign (Edward VII)(minted Melbourne - mintmark = M), uncirculated and in absolute mint condition could fetch up to £775 GBP. If it has been circulated but still in good condition, it might fetch anything from bullion value to £120 GBP.
A British 1909 22 carat gold Half-Sovereign (Edward VII)(minted Perth - mintmark = P), uncirculated and in absolute mint condition could fetch up to £3,000 GBP. If it has been circulated but still in good condition, it might fetch anything from £85 to £900 GBP.
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.
There were no 1981 British Half-Sovereign minted.
The Royal Mint did not produce a 1919 Half-Sovereign coin.
Your old gold coin could be a Sovereign or a Half-Sovereign. They are nearly identical other than for size.The Sovereign is 22.05 mm in diameter.The Half-Sovereign is 19.3 mm in diameter.They both have Edward VII on the obverse and St George and the dragon on the reverse.See the two links below.
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 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.
Such a coin does not exist. The 1898 British Half-Sovereign was only ever minted at the Royal Mint London.
There was no British Half-Sovereigns minted from 1927 to 1936 inclusive.