British general circulation decimal coins, years of first issue -
Half New Penny - 1971
Half Penny - 1982
1 New Penny - 1971
1 Penny - 1982
2 New Pence - 1971
2 Pence - 1982
5 New Pence - 1968
5 New Pence - 1982
10 New Pence - 1968
10 Pence - 1982
20 Pence - 1982
25 Pence (Crown) - 1972
50 New Pence - 1969
50 Pence - 1982
1 Pound - 1983
2 Pound - 1986
5 Pound (Crown) - 1990
Yes they do. No British decimal general circulation coin has any silver content at all. The "silver" coins of all Commonwealth countries similarly have no silver content.
No. The last British general circulation coin to contain any silver was in 1946. All British "silver" coins are made from a copper nickel alloy giving them a silvery appearance. Some Proof coins may be made from sterling silver, but that will be indicated on the packaging they are bought in.
British coins have been minted for well over 1,000 years. There are hundreds if not thousands of rare British coins from this period. Other than the odd "error" coin that might turn up from time to time, there are no general circulation decimal coins that could be considered to be especially rare.
The British crown coin went out of general circulation in 1971 when the UK adopted a decimal currency system. However, commemorative crown coins are still minted for collectors and special occasions.
There are no British general circulation decimal coins that could be considered to have any collector value unless they are "Mint Uncirculated", "Proof", or part of a "Mint" or "Proof" coin set.
There was no 1977 British One Pound coin minted. The first general circulation One Pound coins was minted in 1983.
There were sufficient 20 Pence coins in circulation already. Some 1986 20 pence coins were issued as part of Royal Mint sets, but these were Proof FDC coins not for general circulation.
All British Elizabeth II decimal coins look pretty much the same from 1968 to 1982. The larger 5, 10 and 50 Pence coins are no longer in circulation and have been demonetised. They have little or no value. The Half New Penny coins are no longer in circulation and have been demonetised. They have little or no value. Apart from those coins, most British decimal 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 whatever is inscribed on them. See the link below to the Royal Mint for images of British decimal coins.
The smallest mintage of New Zealand predecimal general circulation coins was the 1961 Halfcrown with only 80,000 minted. The smallest mintage of New Zealand decimal general circulation coins was the 1997 Two Dollar coin with only 1,008,000 minted.
The British general circulation One Pound coin is made from a nickel and brass alloy. It is the brass that gives the coin the pale gold appearance. There are no precious metals in any general circulation British coins.
The standard British decimal Two Pound commemorative coins issued from 1986 to 1996, are made from a nickel-brass alloy. The standard British decimal bimetal Two Pound general circulation coin issued from 1997 onwards, have a nickel-brass outer ring and cupro-nickel inner. No British decimal general circulation coin contains any precious metal. If you have a decimal Proof gold or silver coin, there will be a reference to the gold or silver content on the box it came in when you bought it, and a certificate of authenticity.
Yes, all British general circulation silver coins between 1919 and 1946 contained 50% silver.