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2. Kyrgyz som - Wikipedia

   en.wikipedia.org/wiki/Kyrgyz_som

   This move came with growing demand from vendors for coins, especially from slot machine industries and those desiring a more efficient system for collecting fare money. [6] The coins were issued in denominations of 10 and 50 tıyın and 1, 3, and 5 som. A 10 som coin was issued a year later in 2009.

3. International Prototype of the Kilogram - Wikipedia

   en.wikipedia.org/wiki/International_prototype_of...

   For instance, K20, the US's primary standard, originally had an official mass of 1 kg − 39 μg (micrograms) in 1889; that is to say, K20 was 39 μg less than the IPK. A verification performed in 1948 showed a mass of 1 kg − 19 μg. The latest verification performed in 1989 shows a mass precisely identical to its original 1889 value.

4. A Guide Book of United States Coins - Wikipedia

   en.wikipedia.org/wiki/A_Guide_Book_of_United...

   A Guide Book of United States Coins (the Red Book) is the longest running price guide for U.S. coins.Across all formats, 24 million copies have been sold. [2] The first edition, dated 1947, went on sale in November 1946.

5. 29 of the Most Valuable Coins Ever Minted — 9 Are Worth Over ...

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   5. 2007 C$1M Coin. Potential worth: $4.1 million. The massive 100 kg. 2007 C$1M coin (Canadian) can land up to $4.1 million, according to Urban Aunty. It’s made of pure gold. 4. 1804 Silver ...

6. Rare Currency: How To Find Out If Your Bills and Coins Are ...

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   Here are the oddities to help you determine if your bills and coins are worth thousands or more. Explore More: 10 of the Most Valuable Pennies. Look at the Sizing

7. 8 Rare Coins Worth Thousands That Are Highly Coveted by Coin ...

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   Most coins are worth their face value, but others are different story. Coin collectors seek rare currencies often valued at a small fortune or greater. Read More: 20 Rare State Quarters Worth...