Please examine this coin to determine national orign and then submit a new question concerning it.
No they are not, in general just because a coin has a mintmark does not make it more valuable.
British gold coins of that era did not have values marked on them. The only way to tell the value of such a coin is by it's size.
The coin is a Eisenhower dollar and none of them released for circulation have silver. For 1971 & 1972 only, all S mint marked coins are 40% silver. Also if the coin is a high grade uncirculated example it may be worth up to $5.00.
You can determine if your coins are made of silver by checking the coin's composition, minting year, and any mint marks. Silver coins typically have a higher silver content than other metals like copper or nickel, and some may even be marked as "silver" on the coin itself. Using a coin scale or magnet can also help determine if your coin is silver.
To make 10 pence using coins, there are several possible combinations. You could use one 10p coin, two 5p coins, a 5p coin and five 1p coins, or ten 1p coins. These are the four distinct ways to make 10 pence with coins.
Broadly speaking, yes. Chinese law only prohibits copies of PRC coins - anything else (including older imperial Chinese coins) is fair game. That said, such coins (or, at least copies of US coins) can't knowingly be sold in the United States without breaking US law.
No, a genuine Continental currency coin would not have the word "copy" on it. If a coin has "copy" marked on it, it is likely a replica or counterfeit coin. Authentic Continental currency coins were issued during the American Revolution and did not include such markings.
Yes. Go to the Royal Mint link below and look for the coins marked £5.
There's nothing called a "commerative" coin. There are COMMEMORATIVE coins, but an coin from 1985 is unlikely to commemorate any major bicentennial. Special coins were minted in 1976 for the 200th anniversary of independence, and others were minted in 1989 for the 200th anniversary of the Constitution.
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The 1922-D Peace dollar is a very common coin. Circulated coins are $31.00-$41.00. Typical Mint State coins are $45.00-$52.00.
£1 coin + 50p coin + 2x20p coins + 10p coin = £2