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Such a broad all encompassing question is not possible to answer in this forum. There are books of hundreds and even thousands of pages devoted to this subject, even for the coins of just one country.
You could venture off to your local library and look for a coin catalogue such as the "Standard Catalogue of World Coins" which will give you some idea of valuable coins in the past 100 years.
What else can I help you with?
How much is a harrahs coin worth?
How much a Harrah's coin is worth depends on the denomination of the coin and the year it was produced. Most coins from Harrah's are only worth their face value, but older coins from this casino may be collectible and more valuable.
How do you certify coins?
Coins are certified by services like NGC or PCGS. It is expensive, so it isn't worth it unless the coins are really, really valuable.
How much are ancient coins worth?
How much ancient coins are worth depends on where they are from and in what condition they are. It also depends on how rare they are.
Is a George Washington coin dollar valuable?
No, if you are talking about the brass coins commonly in circulation. Those coins are only worth $1.
When do coins become valuable?
Coins become valuable when they are minted with errors. This is also based on the quantity of coins with errors, as well. Another way that coins may become valuable is when they are very old. And yet another way is if they are made from a precious metal. Coins that are minted from a high percentage of either silver or gold. This is due to the intrinsic value of the metal. A $20 gold piece can be worth hundreds or thousands of dollars. Theoretically, if a one ounce gold coin, originally minted as worth one dollar, may be worth as much as $1300 if it was 100% gold. This is only theoretical, because coins are never minted using 100% of the metal, because they would be too soft.
How much is 50 pounds of coins worth?
It depends on what coins they are.
How much are locomotive silver dollar coins worth?
They are bullion coins and are worth only what the metals they are composed of are worth.
How much are the red coins worth on Temple Run?
The yellow coins are worth 1, the red coins are worth 2, and the blue coins are worth 3.
How do you certify?
Coins are certified by services like NGC or PCGS. It is expensive, so it isn't worth it unless the coins are really, really valuable.
How much is yocash worth in coins?
1 yocash = 100 coins
How much are the key and chest worth on yoville?
Now its 100 coins and silver is worth 200 coins.
Are krugerrands valuable?
They are gold coins issued by the Government of South Africa. They are worth their weight in gold, depending on the world price of gold. Yes, they are valuable.
