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  2. List of most expensive coins - Wikipedia

    en.wikipedia.org/wiki/List_of_most_expensive_coins

    List of most expensive coins Price Year Type Grade Issuing country Provenance Firm Date of sale $18,900,000 1933 1933 double eagle: MS-65 CAC United States: King Farouk of Egypt: Sotheby's [1] June 8, 2021 $12,000,000 1794 Flowing Hair dollar: SP-66 CAC United States Neil, Carter Private sale [2] January 24, 2013 $9,360,000 1787 Brasher ...

  3. Louisiana Purchase Exposition gold dollar - Wikipedia

    en.wikipedia.org/wiki/Louisiana_Purchase...

    The 2014 edition of R.S. Yeoman's A Guide Book of United States Coins (the Red Book) lists both the Jefferson and the McKinley variety at prices ranging from $500 in Almost Uncirculated (AU-50) condition to $2,150 in near pristine MS-66 condition, though the Jefferson is more expensive in some intermediate grades.

  4. Thomas Jefferson - Wikipedia

    en.wikipedia.org/wiki/Thomas_Jefferson

    Thomas Jefferson (April 13 [O.S. April 2], 1743 – July 4, 1826) was an American Founding Father who served as the third president of the United States from 1801 to 1809. [6] He was the primary author of the Declaration of Independence .

  5. Regenerative circuit - Wikipedia

    en.wikipedia.org/wiki/Regenerative_circuit

    Regenerative receivers require fewer components than other types of receiver circuit, such as the TRF and superheterodyne. The circuit's advantage was that it got much more amplification (gain) out of the expensive vacuum tubes , thus reducing the number of tubes required and therefore the cost of a receiver.

  6. Ptolemaic coinage - Wikipedia

    en.wikipedia.org/wiki/Ptolemaic_coinage

    The Ptolemaic dynasty introduced standard coinage to Egypt, where pre-existing native dynasties made only very limited use of coins. Egyptian gold stater was the first coin ever minted in ancient Egypt around 360 BC during the reign of pharaoh Teos of the 30th Dynasty. These coins were used to pay salaries of Greek mercenaries in his service.

  7. Jefferson nickel - Wikipedia

    en.wikipedia.org/wiki/Jefferson_nickel

    The Jefferson nickel has been the five-cent coin struck by the United States Mint since 1938, when it replaced the Buffalo nickel.From 1938 until 2004, the copper-nickel coin's obverse featured a profile depiction of Founding Father and third U.S. President Thomas Jefferson by artist Felix Schlag; the obverse design used in 2005 was also in profile, though by Joe Fitzgerald.

  8. Egyptian gold stater - Wikipedia

    en.wikipedia.org/wiki/Egyptian_gold_stater

    Teos' successor Nectanebo II kept this practice, though coining his personal gold staters. Gold stater as a daric (about 8.42 grams), obverse with a prancing horse on the right, [1] reverse with the hieroglyphs nfr-nb. Small gold stater (about 2.56 grams, diameter 14-15 mm), with a probable picture of a leaping gazelle.

  9. Antique radio - Wikipedia

    en.wikipedia.org/wiki/Antique_radio

    A foxhole radio is a simple crystal sets radio receiver cobbled together from whatever parts one could make (which were very few indeed) or scrounged from junked equipment. Such a set typically used salvaged domestic wiring for an antenna, a double-edged safety-razor blade and pencil lead (or bent safety-pin) for a detector, and a tin can ...