Jacobus
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For the borough in Pennsylvania, see Jacobus, Pennsylvania.
A Jacobus is an English gold coin of the reign of James I, worth 25 shillings.[1]
Isaac Newton refers to the coin in a letter to John Locke:
The Jacobus piece coin'd for 20 shillings is the hide41 [sic]: 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]
References
- ↑ 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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