You are asking about a 2 1/2 Shilling coin from South Africa (KM#7). The coin weighs 14.138 grams and is 92.5% silver, giving it an ASW (Actual Silver Weight) of 0.4205 troy ounces. With silver at US$18.20 per troy ounce (as of May 27, 2010), the "melt value" of this coin is about US$7.65.
The obverse of the coin has a portrait of Paul Kruger and the words "ZUID AFRIKAANSCHE REPUBLIEK" (Afrikaans for "South African Republic"). The reverse has a coat of arms with the denomination and date above.
149,000 of these coins were produced in 1894. According to the Standard Catalog of World Coins, an example is worth about US$10 in Very Fine condition, US$30 in Extremely Fine condition, and US$75 in Uncirculated condition. Note, however, that these prices were established when silver was rather lower in value, and so may understate value by a dollar or two.
A U.S. Liberty Head nickel dated 1897 is not rare. Most circulated coins are valued from $3.00-$20.00. It needs to be seen for an accurate value.
A bit more information would be helpful, but if it is gold, English and is dated 1670, you have something of value, more so if it is in good condition. It is possibly a Charles II Unite (20 shillings), Double-crown or a Crown. Get it to a reputable coin dealer.
Such a coin does not exist. The Royal Mint produced no 1704 Crown coins.
The value for the Malaysian KM2 Sen coin dated 1968 depends on its condition. As of 2014 this coin sells for between 3.00 and 5.00.
poti
bilat
You have in your possession a 1897 Coronet Head $5 Half Eagle - if this coin is in fine condition (F12), its value is: $250.
It really depends on which coin dated 1886 you're asking about
The US has never made a 10000 coin.
There was no British 1886 Crown (Five Shillings) coin minted.
There was no British 1846 Crown (Five Shillings) coin issued.
As of today bullion value is $6.30 for this coin a uncirculated coin is about $10.00.