A Proof coin is one that has been struck on specially prepared and polished dies and then the coin, after striking, is often hand polished to a mirror like finish. This type of coin is intended for serious collectors and investors and, not for circulation.
A Sovereign is a British coin made from gold with a nominal value of One Pound GBP. A gold Proof FDC Sovereign would be valued at a minimum of £100 GBP.
Gold Bullion is gold in the form of bars or ingots. Depending on the price of gold at any given time, the bullion value can exceed the collector value of a coin at times.
Most countries would ensure that the metal they make their coins from will never exceed the value of the coin.
Modern sovereigns unless in proof condition are generally only worth bullion. At the moment a full sovereign is worth about $400 US/CAD in gold.
A British 2006 Sovereign (bullion type), uncirculated and in absolute mint condition could fetch up to £115 GBP. A British 2006 Sovereign (Proof FDC), uncirculated and in absolute mint condition could fetch up to £225 GBP. A reputable coin dealer will be able to give a more accurate valuation.
British decimal Half-Sovereigns are minted annually in most years as a non-circulating Proof FDC gold bullion coin. The last pre-decimal Half-Sovereign minted was issued in 1937 as a non-circulating Proof FDC coin.
A proof uses postulates and theorems to prove some statement.
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About 40 proof
flow proof is just run of text 2 colmn has line/column breaks
Average retail value for the Proof coin is about $40.00.
A proof coin has a special shiny finish on it and it is made to be sold to collectors, and not used as money.
To show or demonstrate something is a more flexible concept; proof suggests a certain degree of intellectual rigor.
A British Half-Sovereign has a face value of 50 Pence. They are made from 22 carat gold and, since 1980 have been issued as a collector or investment coin issued as either or Proof or bullion coin, or both, their actual value, depending on the year, is more likely to be anything from £140 to £200 GBP. See the link below for a currency conversion.
Retail prices for a Deep Cameo Proof are: $18.00-$22.00