The coin usually has the name of the country or ruler on it.
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.
Look on the reverse, between the "O" of the word "ONE" and the tip of the wing feathers. If there is a small "S" there, the coin was minted in San Francisco. If not, it was minted in Philadelphia.
The mint is the place where the coin was made. In the US there are several. If the coin has a D next to the date, it was minted in Denver. S is for San Francisco.
$20 gold coins minted by the Confederacy had the name of the United States on them so it is impossible to tell which coin they minted.
There was no 1977 British One Pound coin minted. The first general circulation One Pound coins was minted in 1983.
Possibly a typo for a coin minted in 1773.
anywhere
some random amount of money that nobody knows until they do know.
There was a USA dollar coin with Susan B. Anthony's face on it. It was minted at the end of the 1970's,
There was never a 2 Florin coin minted in the 20th century.
The last British Crown (5 Shillings) coin to be minted was the 1965 Churchill Commemorative.