These coins are still potentially in circulation so, unless they are part of a Proof or uncirculated mint set or are individual Proof or uncirculated coins and in absolute mint condition, they are worth One Pound.
A British 1983 nickel-brass One Pound coin (Elizabeth II)(Royal Arms design - edge = "DECUS ET TUTAMEN"), uncirculated and in absolute mint condition could fetch up to £5 GBP.
A British 1983 nickel-brass One Pound coin (Elizabeth II)(Royal Arms design - edge = "DECUS ET TUTAMEN")(specimen in presentation folder), in absolute mint condition could fetch up to £5 GBP.
A British 1983 nickel-brass One Pound coin (Elizabeth II)(Royal Arms design - edge = "DECUS ET TUTAMEN")(Proof FDC), could fetch up to £5 GBP.
A British 1983 One Pound coin (Elizabeth II)(Royal Arms design - edge = "DECUS ET TUTAMEN")(Proof in silver FDC), could fetch up to £35 GBP.
A British 1983 One Pound coin (Elizabeth II)(Royal Arms design - edge = "DECUS ET TUTAMEN")(Proof piedfort in silver FDC), could fetch up to £125 GBP.
A reputable coin dealer will be able to give a more accurate valuation.
Such a coin does not exist. The British One Pound coin was first issued in 1983.
There was no 1977 British One Pound coin minted. The first general circulation One Pound coins was minted in 1983.
The 1983 One Pound coin was the year of first issue for the British One Pound coin which replaced the One Pound note. The British One Pound coin is legal tender anywhere in the United Kingdom and some of its dependencies.
There was no 1811 British Sovereign or One Pound coin minted.
A British 1983 Two Pound (Proof in gold FDC), uncirculated and in absolute mint condition could fetch up to £250 GBP. A reputable coin dealer will be able to give a more accurate valuation.
The Royal Mint issued no 1977 commemorative gold coins.
There was no British 1901 Two Pound or Double Sovereign coin produced.
The British decimal One Pound (nickel brass) coin was first issued in 1983. A gold One Pound coin was issued from about 1489 until 1604.
Please ask one question at a time in the format - "What is the value of a 1983 British One Pound coin?" These coins are still potentially in circulation so, unless they are part of a Proof or uncirculated mint set or are individual Proof or uncirculated coins and in absolute mint condition, they are worth One Pound.
The term "pound" to describe a British monetary value has been in use for hundreds of years, but there was no official coin or banknote to the value of "One Pound" and called "One Pound" issued until much more recently. The modern Sovereign (with a face value of a One Pound or 20 Shillings) was reintroduced into the British currency in 1817. The first British coin with a "Pound" denomination ascribed to it was the 1820 Five Pound gold coin. The Bank of England produced One Pound notes periodically from 1797 to 1821. The first official regular issue of British One Pound note, which was actually a Treasury Note, was first issued in 1914. The first British decimal One Pound coin was issued in 1983.
The British One Pound coin, as distinct from the "Sovereign" coin, was introduced in 1983 to replace the Bank of England One Pound note. See the link below.
There were no British Two Pound coins minted from 1888 to 1892 inclusive.