You can buy any non-circulating British coin from the Royal Mint in the year of issue.
For older coins, you would need to see a coin dealer.
There was a total of 30,044,000 1911 British Sovereigns minted for circulation.
British Sovereigns have been issued for nearly 200 years. The value of any Sovereign would depend on its year, place of minting and its condition.
There were 2.95 million 1982 British "Uncirculated" Sovereigns minted. There were 20,000 1982 British "Proof FDC" Sovereigns minted.
The were approximately 2,718,000 British 1838 gold Sovereigns minted.
Isle of Man Sovereigns and Half-Sovereigns are very similar, but not exactly identical to British Sovereigns and Half-Sovereigns. The Isle of Man Sovereign is 22.5mm in diameter and the Half-Sovereign is 19.5mm in diameter.
At buy sovereigns.com
There were about 10,041,000 British 1904 Sovereigns minted at the Royal Mint London (no mintmark). There were about 3,743,000 British 1904 Sovereigns minted at the Melbourne Mint (mintmark = M to the right of the date). There were about 4,506,000 British 1904 Sovereigns minted at the Perth Mint (mintmark = P to the right of the date). There were about 2,986,000 British 1904 Sovereigns minted at the Sydney Mint (mintmark = S to the right of the date).
Sovereigns were not in circulation in 1692.
There were no British Half-Sovereigns minted from 1938 to 1979 inclusive.
99 years as of February 2010.
There was no British Half-Sovereigns minted from 1927 to 1936 inclusive.
There were no 1804 British Sovereigns minted. The Sovereign was reintroduced into the currency in 1817.