Not enough information. Please check your coin again and post a new, separate question with its denomination and the name of the issuing country.
Exactly the value of the copper in the coin. No more. The current price of copper is about $3.50 pound. So your coin just has sentimental value.
It is a copper bullion coin and its value is close to whatever the copper market is.
The value of the copper in a 2 Pence coin would be significantly less then 10% of the face value of the coin at the time the coin was minted. Today, it might be a little more, about 0.2 Pence.
The 1949 Danmark 25 ore coin is composed of copper-nickel, specifically 75% copper and 25% nickel. This alloy gives the coin durability and a silvery appearance. The coin features designs that are significant to Danish heritage, making it a notable piece for collectors.
A nickel with copper infused is still worth 5 cents, as the metal composition of the coin is what determines its value. The added copper may change the appearance of the coin but not its monetary worth.
The value of a 1949 Canadian silver dollar depends on the condition of the coin. Such a coin would fetch between 21 and 27 US dollars at auction.
No gold US coins of any type were struck in 1949
1949 italiano
With a date of 1979 the coin has no silver it's a clad coin made of copper-nickel alloy bonded to a core of copper but if the coin is missing on full side it may have significant value. Take it to a dealer for and assessment.
The coin is 75% copper and 25% nickel, so the coin is likely face value the date is still in circulation.
There is no such coin. The US mint does not a coin out of only one metal.
$1 dollar if you lucky