Cent, nickel, dime, quarter, half-dollar, dollar.
There was no 1974 British 25 Pence coin minted.
Many U.S. coins have eagles. Dates and denominations are needed. Post new question.
The mint mark on the 1974 Eisenhower silver dollar is located on the reverse side of the coin, just to the right of the eagle's tail. If the coin was minted in Philadelphia, it will have no mint mark. If it was minted in Denver, it will have a "D," and if it was minted in San Francisco, it will have an "S."
29.00
Your question isn't nearly specific enough. The U.S. minted over a dozen different denominations and varieties of coins in 1865. There is not "the" 1865 coin; there were millions of coins minted that year. You can look at a site such as coinfacts.com for pictures. See the Related Link below.
There have been a number of strange coin denominations minted at different times, but I can find no reference to a Twopence Halfpenny coin. There was a Twopence-Farthing coin produced very briefly during the reign of Queen Elizabeth I about 1560, but this was a modification to an earlier coin.
If it's silver, then at least $30.00
$1 coins minted from 1971 to 1978 carried a picture of President Eisenhower
No, such a coin was only minted in 1974 and all examples save for a few were supposed to have been melted down.
You need to provide a lot more details. The U.S. minted about a dozen different denominations in 1886 and at about a half dozen mints. Please post a new question with the coin's denomination and, if you can locate it, the mint mark.
All coins have a date that they were minted, so by looking at the coin carefully, you will find the date the coin was minted.
Such a coin does not exist. The last British Halfcrown coin minted for circulation was minted in 1967. The last British Halfcrown Proof coin was minted in 1970.