Jacobus: Difference between revisions
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{{Short description|English gold coin of the reign of James I}} |
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{{other uses}} |
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{{Use dmy dates|date=April 2022}} |
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A '''Jacobus''' is an English [[gold coin]] of the reign of [[James I of England|James I]], worth 25 [[shillings]].<ref>[http://www.public-domain-content.com/books/discourse_coin_coinage/9.shtml ''A Discourse of Coin and Coinage'']</ref> The name of the coin comes from the Latin inscription surrounding the King's head on the obverse of the coin, <small>IACOBUS D G MAG BRIT FRA ET HI REX</small> ("James, by the grace of God, of Britain, France, and Ireland King"). |
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[[Isaac Newton]] refers to the coin in a letter to [[John Locke]]: |
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<blockquote>'' The Jacobus piece coin'd for 20 shillings is the |
<blockquote>'' The Jacobus piece coin'd for 20 shillings is the {{sic|hide=y|41|st}}: part of a pound Troy, and a Carolus 20s piece is of the same weight. But a broad Jacobus (as I find by weighing some of them) is the 38th part of a pound Troy.''<ref>[http://www.gold.org/download/value/reserve_asset/history/monetary_history/vol1pdf/1698sep19.pdf Letter of Isaac Newton] dated September 19, 1698, to [[John Locke]], concerning the weight and fineness of various coins.</ref></blockquote> |
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These correspond to masses of 9.10 and 9.82 [[gram]]s respectively, making the broad Jacobus slightly heavier. |
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More broadly, ''Jacobus'' is the [[Latin]] form of the English name [[James]]. |
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==References== |
==References== |
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{{Portal|Money}} |
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{{reflist}} |
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* [http://www.public-domain-content.com/books/discourse_coin_coinage/9.shtml ''A Discourse of Coin and Coinage''], with some information on the coin. |
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{{Coins of England}} |
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* [http://www.gold.org/value/reserve_asset/history/monetary_history/vol1/1698sep19.html Correspondence] of Isaac Newton, [[Warden of the Mint]], dated from [[Jermin Street, Westminster]], to [[John Locke]], concerning the weight and fineness of various coins. ([[September 19]], [[1698]]). |
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[[Category:Coins of England]] |
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[[Category:English gold coins]] |
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Latest revision as of 00:46, 13 July 2024
A Jacobus is an English gold coin of the reign of James I, worth 25 shillings.[1] The name of the coin comes from the Latin inscription surrounding the King's head on the obverse of the coin, IACOBUS D G MAG BRIT FRA ET HI REX ("James, by the grace of God, of Britain, France, and Ireland King").
Isaac Newton refers to the coin in a letter to John Locke:
The Jacobus piece coin'd for 20 shillings is the 41st: part of a pound Troy, and a Carolus 20s piece is of the same weight. But a broad Jacobus (as I find by weighing some of them) is the 38th part of a pound Troy.[2]
These correspond to masses of 9.10 and 9.82 grams respectively, making the broad Jacobus slightly heavier.
References
[edit]
- ^ A Discourse of Coin and Coinage
- ^ Letter of Isaac Newton dated September 19, 1698, to John Locke, concerning the weight and fineness of various coins.
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