No. King George III died in 1820. King Edward VII was on the throne in 1907. All 1907 British and British Empire/Commonwealth coins will have King Edward VII on the obverse.
You may have a token or medallion in remembrance George III.
Such a coin does not exist. George III was born in 1738 and was king from 1760 to 1820.
You have described every British coin issued in 1797. Please provide the type of metal it appears to be made from, the diameter of the coin, the inscriptions and the design on the reverse.
This very much depends on condition, and what denomination the coin is. This can be checked on http://www.coins-of-the-uk.co.uk A coin of 1720 would say Georgius Rex or Georgivs Rex. George IV did not reign until the 19th century.
GEORGIUS III DEI GRATIA REX (on the obverse) tells me who the King was in Latin, it does not tell me anything about the coin, although, you can sometimes make a guess. The full inscription usually reads "GEORGIUS III DEI GRATIA REX FIDEI DEFENSOR" meaning, "King George III, by the Grace of God, Defender of the Faith". Variations of this inscription, some more abbreviated than others, will appear on all George III coins. A similar inscription, suitably modified for the King or Queen's name and gender, appears on all British and Commonwealth coins. Queen Victoria's unabbreviated title would appear as "VICTORIA DEI GRATIA BRITTANIA REGINA FIDEI DEFENSOR INDIA IMPERATOR" meaning, "Victoria, by the Grace of God, Queen of the British Territories, Defender of the Faith, Empress of India".
Apart from George III, the only person depicted on British 1797 coins is Britannia, the female personification of Britain. She is usually shown as being seated and holding a trident and shield. In 1797 she is on the reverse of the "Cartwheel" Twopence and the "Cartwheel" Penny.
You have a British coin ("Georgius IV D.G. Britannia Rex F.D." is abbreviated latin for "George the Fourth, King of Britain and Defender of the Faith") dated 1821. To get a value, the denomination and condition of the coin would need to be known.
15 years is a very big mistake especially for a gold coin. I suggest that the coin is not what it appears to be. A reputable coin dealer will be able to identify your coin and give a valuation if it turns out to be genuine.
I have vtraque vnum 1760 how much is the price
"GEORGIVS VI REX IMPERATOR" is Latin for "George the Sixth, King and Emperor". The coin is likely South African, but I would need to know the denomination and the condition to give an estimated value.
Your coin is either a British 1797 "Cartwheel" Twopence 41mm in diameter, or a British 1797 "Cartwheel" Penny 36mm in diameter. If somebody has drilled a hole in it, it might be worth a few Pence. Modified coins have no collector value.
With minor variations, the inscription is much the same as appeared on all British Empire/Commonwealth coins of the period. It is heavily abbreviated Latin. GEORGIUS V.D G REX ET IND.IMP. GEORGIUS VI.D G REX ET IND.IMP. Expanded = GEORGIUS V DEI GRATIA REX ET INDIA IMPERATOR Translation = George V by the Grace of God, King and Emperor of India.
The value of a 1794 Carolus V coin would actually depend on a number of factors. Most important of these factors would be the condition of the coin.