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  2. US Presidential Dollar Coins Worth the Most Money — You Could ...

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    As a way of honoring more presidents, the U.S. Mint began issuing Presidential Dollar coins in the 2000s. Most are worth about face value, ... 10 New Cars To Avoid Buying in 2025.

  3. Epigraph (mathematics) - Wikipedia

    en.wikipedia.org/wiki/Epigraph_(mathematics)

    Epigraph of a function A function (in black) is convex if and only if the region above its graph (in green) is a convex set.This region is the function's epigraph. In mathematics, the epigraph or supergraph [1] of a function: [,] valued in the extended real numbers [,] = {} is the set ⁡ = {(,) : ()} consisting of all points in the Cartesian product lying on or above the function's graph. [2]

  4. Glossary of numismatics - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_numismatics

    Dipped coins almost always have a lower numismatic value than when they were in their former "dirty" state, hence most numismatists do not recommend dipping or any other method of cleaning coins as doing so will likely reduce the coin's value. Double Eagle (U.S.A.) A gold coin struck in the United States from 1850 to 1933, worth $20.00 (twenty ...

  5. 9 Rare American Coins That Are Worth a Lot of Money - AOL

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    1969-D Kennedy Half Dollar: $2,640+ Versions of this coin in pristine, uncirculated condition can sell for as much as $6,000. ... 7 SUVs To Avoid Buying in 2025. ... 9 Rare American Coins That Are ...

  6. 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. ... the Morgans,’ the 1895 Morgan Dollar ...

  7. Gold dollar - Wikipedia

    en.wikipedia.org/wiki/Gold_dollar

    The gold dollar or gold one-dollar piece is a gold coin that was struck as a regular issue by the United States Bureau of the Mint from 1849 to 1889. The coin had three types over its lifetime, all designed by Mint Chief Engraver James B. Longacre. The Type 1 issue has the smallest diameter (0.5 inch =12.7mm) of any United States coin minted to ...

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