Such a coin does not exist.
The modern Sovereign coinage was reintroduced into the currency in 1817. The Five Pound Sovereign in 1820.
Similar coins circulating in 1775 would have been the 5 Guinea coin, but there were none issued in 1775.
There are two factors that determine the value of a gold sovereign.
The 1925 sovereign was minted in 5 locations:
The most desirable is the Perth mint coin. If it's in perfect uncirculated condition, you may achieve a price of around £400 - £500.
If your coin is in circulated condition, then its more likely to be simply bullion value.
At the time of writing this answer, the value would be £180.75 ($318.00 / 247.78 Euro).
Approximately 250 pounds, varying on the year the sovereign was made and what condition the ring is in.
The face value of a Sovereign is One Pound (GBP). Since all British Sovereign coinage is made from 22 carat gold, the actual value is very much higher. Athe very least, they are worth the bullion value of gold.
The gold Guinea coin predates the Pound in the British currency. The last Guinea coins were issued in 1813. The first Pound or Sovereign coins were issued in 1820. There were 21 Shillings in a Guinea and 20 Shillings in a Pound (or Sovereign).
The only US gold coin dated 1820 is a Capped Head Quarter Eagle ($5.00) gold piece. Three different varieties exist, the most common type has a minimum value of $3,500.00
No. The British gold Guinea coin was a coin with a value of 21 Shillings and was 24mm in diameter. The Guinea was last issued in 1813 and was effectively replaced by the Sovereign. The British 22 carat gold Sovereign coin is a coin with a face value of One Pound (or 20 Shillings) and is 22.05mm in diameter. The modern Sovereign was first issued in 1817.
The most common British gold coins are the Sovereign and Half-Sovereign. Since 1985 a Five and Two Pound gold coin has been minted every year and, in 2009 for the first time, a Quarter-Sovereign was minted. Since 1987, fine gold or fine gold alloyed with silver bullion coins have been minted, including - One Hundred Pounds - 1oz Fifty Pounds - 1/2oz Twenty-Five Pounds - 1/4oz Ten Pounds - 1/10oz
There were never any British Two and a Half-Sovereign coins minted.
A Double Sovereign is a gold coin of Two Pounds face value. During Queen Victoria's reign, they were only issued in 1887 and 1893 and were minted to a standard 16 grams and 28 mm in diameter.
A British Half-Sovereign has a face value of 50 Pence. They are made from 22 carat gold and, since 1980 have been issued as a collector or investment coin issued as either or Proof or bullion coin, or both, their actual value, depending on the year, is more likely to be anything from £140 to £200 GBP. See the link below for a currency conversion.
The value of any coin would depend on the year and condition of the coin. At the very least, a 22 carat gold sovereign would be worth its weight in the current bullion value of gold.
The face value of a Sovereign is One Pound. Since they are made from 7.322381 grams of 22 carat gold, they are actually worth very substantially more than One Pound and at the very least, are worth whatever the current bullion value of gold might be at any given time.
The British 1925 gold Sovereign (KG V) is not rare and in circulated condition will probably get only bullion value.