The larger pre-1991 10 Pence coins were withdrawn from circulation and demonetised in 1993. 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 have little or no value.
Not much I'm afraid. The set, which comes in a blue wallet and contains Five and Ten Pence coins dated 1968 and Half, One, and Two Pence coins dated 1971, is valued at about US$2.00 according to the Standard Catalog of World Coins.
There were no British 1979 20 Pence coins minted.
If they have been circulated, all British "New" Pence coins are worth whatever is indicated on them.
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 Two Pence.
There were no British "v" pence coins minted in 1820, or ever.
There were no British 1975 25 Pence coins issued.
One question at a time please. Answers to all of your coins should appear in WikiAnswers if you use the format - What is the value of a 1910 British Penny
The larger pre-1991 5 Pence coins were withdrawn from circulation and demonetised in 1991. 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 have little or no value. The smaller (18 mm) coins from 1990 onwards 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 5 Pence.
The British 2 Pence coin weighs 7.12 grams. 7 Kilograms would equal about 983 Two Pence coins. 983 x 2 Pence coins comes to about £19.66
Only mint condition Uncirculated and Proof coins in the original packaging might have a value of Three Pounds, otherwise, 10 Pence coins are worth 10 Pence.
The term "New Pence" ceased to be used on British coins in 1981. The word "Pence" should have a numeral with it to indicate how many Pence. Pence being the plural of Penny. In 1997 there would have been 50 Pence, 20 Pence, 10 Pence, 5 Pence and 2 Pence coins and a 1 Penny coin.
Check again. The British introduced decimal currency on the 15th of February, 1971. Since then, 25 Pence coins have only ever been struck as commemoratives.