The "edge inscription" on the standard issue Two Pound coins reads "STANDING ON THE SHOULDERS OF GIANTS", and is credited to Sir Isaac newton in acknowledgement of the achievements of scientists from the past, without whom todays achievements would not be possible.
Most British Crown (Five Shilling) coins have an inscription around the edge.
The inscriptions on the Two Pound coin change from year to year.
See the link below.
There is a one pound coin and a two pound coin but not a three pound coin.
There was no British 1901 Two Pound or Double Sovereign coin produced.
There was no 1977 British One Pound coin minted. The first general circulation One Pound coins was minted in 1983.
There were no British Two Pound coins minted from 1888 to 1892 inclusive.
There was no 1886 British Two Pound coin minted. During the reign of Queen Victoria, they were only minted in 1887 and 1893.
Therre were no 1821 British Double Sovereign or Two Pound coins minted.
The Pound or Sovereign was not introduced into the British system of currency until 1817 when it replaced the Guinea, and the first Two Pound coin (Double Sovereigns) was minted in 1820.
British Pound denominations currently in circulation include - One Pound coin Two Pound coin Five Pound coin (legal tender and often found in circulation) Five Pound note Ten Pound note Twenty Pound note Fifty Pound note
There was no 1891 British Two Pound coin issued.
The Royal Mint issued no gold Two Pound coins from 1938 to 1952 inclusive.
All British decimal Two Pound coins are still legal tender. They are worth Two Pounds. If you have a mint uncirculated or Proof coin still in its packaging, you could sell it on eBay or take it to a reputable coin dealer.
See the link below.