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  2. List of most expensive video games to develop - Wikipedia

    en.wikipedia.org/wiki/List_of_most_expensive...

    Costs (million US$) Ref. Name Institution Dev. Marketing Total Total (2023 inflation) Grand Theft Auto V: 2013 Rockstar North: Rockstar Games: PS3, Xbox 360: Arvind Bhatia: Sterne Agee 137.5 69–109.3 206.5–246.8 270–323 Red Dead Redemption 2: 2018 Rockstar Games: PS4, Xbox One: Michael Pachter: Wedbush Securities: 170 170 206 Halo 5 ...

  3. List of most expensive coins - Wikipedia

    en.wikipedia.org/wiki/List_of_most_expensive_coins

    $1 Million Canadian Gold Maple Leaf: Canada Dorotheum Auction House June 2010 $4,000,000 (20 million ZAR) 1898 Single 9 Pond South African Republic: King Farouk of Egypt: South Cape Coins (private transaction) May 2010 $3,960,000 1885 Trade Dollar: PF-66 United States Eliasberg Heritage Auctions: January 2019 $3,877,500 1804 Bust Dollar - Class ...

  4. United States Bullion Depository - Wikipedia

    en.wikipedia.org/wiki/United_States_Bullion...

    U.S. coins produced from 1838 through 1933 were made with 90% gold alloyed with 10% copper, while U.K. crown gold coins were minted with a gold proportion of 22 parts to 24 (91 + 2 ⁄ 3 %). These lower gold ratios contrast to many 99.9% fine gold bullion coins minted in modern times since older coins were intended for circulation while newer ...

  5. Doubloon - Wikipedia

    en.wikipedia.org/wiki/Doubloon

    The doubloon (from Spanish doblón, or "double", i.e. double escudo) was a two- escudo gold coin worth approximately $4 (four Spanish dollars) or 32 reales, [1] and weighing 6.766 grams (0.218 troy ounce) of 22- karat gold (or 0.917 fine; hence 6.2 g fine gold). [2] [3] Doubloons were minted in Spain and the viceroyalties of New Spain, Peru ...

  6. Florin - Wikipedia

    en.wikipedia.org/wiki/Florin

    Florin. The Florentine florin was a gold coin (in Italian Fiorino d'oro) struck from 1252 to 1533 with no significant change in its design or metal content standard during that time. [1] It had 54 grains (3.499 grams, 0.1125 troy ounces) of nominally pure or 'fine' gold [2] with a purchasing power difficult to estimate (and variable) but ...

  7. Rare gold Roman coin sold at auction for nearly $785,000

    www.aol.com/article/2014/09/24/rare-gold-roman...

    One of the most sought after coins on the planet sold at auction for more than three-quarters of a million dollars. A Roman gold coin, minted more than 2,000 years ago, depicting the first and ...

  8. Gold coin - Wikipedia

    en.wikipedia.org/wiki/Gold_coin

    A gold coin is a coin that is made mostly or entirely of gold. Most gold coins minted since 1800 are 90–92% gold (22‑ karat ), while most of today's gold bullion coins are pure gold, such as the Britannia, Canadian Maple Leaf, and American Buffalo. Alloyed gold coins, like the American Gold Eagle and South African Krugerrand, are typically ...

  9. Ducat - Wikipedia

    en.wikipedia.org/wiki/Ducat

    Austrian gold ducat depicting Kaiser Franz-Josef, c. 1910. The ducat (/ ˈ d ʌ k ə t /) coin was used as a trade coin in Europe from the later Middle Ages to the 19th century. Its most familiar version, the gold ducat or sequin containing around 3.5 grams (0.11 troy ounces) of 98.6% fine gold, originated in Venice in 1284 and gained wide international acceptance over the centuries.