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  2. Why These 4 Gold Coins as Cheap as $260 Are Worth Your Investment

    www.aol.com/why-4-gold-coins-cheap-132947796.html

    You can find a 1/10-ounce 2023 Gold American Eagle coin for around $315 on the Littleton Coin Company website. Austrian Gold Philharmonic Coin. Austria’s Gold Philharmonic coin features 0.9999 ...

  3. Hypograph (mathematics) - Wikipedia

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

    The hypograph of a function is empty if and only if is identically equal to negative infinity. A function is concave if and only if its hypograph is a convex set . The hypograph of a real affine function g : R n → R {\displaystyle g:\mathbb {R} ^{n}\to \mathbb {R} } is a halfspace in R n + 1 . {\displaystyle \mathbb {R} ^{n+1}.}

  4. Glossary of numismatics - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_numismatics

    A style of coin portraiture started in ancient Rome whose coins often showed the Emperor's head crowned with a laurel wreath. The American Barber coins from 1892 to 1915 and the first portrait of Queen Elizabeth II used in Great Britain from 1953 to 1967 are modern examples. legal tender Coins or currency which must be accepted in payment of debt.

  5. List of bullion coins - Wikipedia

    en.wikipedia.org/wiki/List_of_bullion_coins

    Under United States law, coins that do not meet the legal tender requirement cannot be marketed as "coins". Instead, they must be advertised as rounds. [3] Bullion coins are typically available in various weights, usually multiples or fractions of 1 troy ounce, but some bullion coins are produced in very limited quantities in kilograms or heavier.

  6. 'Pawn Stars:' Why a rare coin worth six figures sold for much ...

    www.aol.com/entertainment/2014-12-12-pawn-stars...

    On History Channel's hit show "Pawn Stars," a man came in to sell a 1907 Saint-Gaudens double eagle $20 gold coin. The coins are extremely rare, and some of them have sold for more than $1 million ...

  7. 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]

  8. Coinage metals - Wikipedia

    en.wikipedia.org/wiki/Coinage_metals

    Silver coins from about 700 BC are known from Aegina Island. [3] Early electrum coins from Ephesus, Lydia, date from about 650 BC. [4] Ancient India in 6th century BC, was also one of the earliest issuers of coins in the world. [5] The gold Croeseids, issued in Lydia, were the first true gold coins with a

  9. Coins 'N Things - Wikipedia

    en.wikipedia.org/wiki/Coins_'N_Things

    Coins 'N Things, also known as CNT Inc., [1] is a privately held, family-controlled business in Bridgewater, Massachusetts, that was established as a retail shop for coin collectors and is now the largest wholesale vendor of gold in the United States. Coins 'N Things was started in 1973 by Louis Oliari, an engineer and coin collector.

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