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Detailed information about coin type: Third Guinea from United Kingdom:

Coin type: Third Guinea
Description

The value of the guinea had fluctuated over the years from twenty to thirty shillings, and back down to twenty one shillings and sixpence by the start of George's reign. A Royal Proclamation of December 1717 fixed the value of the guinea at twenty one shillings. The value of the third guinea was thus fixed at seven shillings.

In the Great Recoinage of 1816, the guinea was replaced as the major unit of currency by the pound and in coinage with a sovereign.

CountryUnited Kingdom CurrencyPound Sterling (pre-decimal)
Sub-type of Sub-types
Face value7 (x Shilling)
Years produced1801 - 1813 CurrentNo (demonetised 1816)
Material0.917 Gold Designer
Production technologyMilled (machine-made) ShapeRound
Size (mm) Thickness (mm)
Mass (g)2.7834
Obverse

Effigy of the monarch, legend.

Obverse inscription

Reverse

Reverse inscription

EdgeMilled Edge inscription

None

Third Guinea: Photos

Coin - Third-Guinea, George III, Great Britain, 1803
Copyright: Museum Victoria / CC BY
Author:
source

Coin - Third-Guinea, George III, Great Britain, 1803
Copyright: Museum Victoria / CC BY
Author:
source
List of 10 coins of type: Third Guinea from United Kingdom
NameMintageReignEffigyLegend
Third Guinea 1801 unknown King George III Portrait by Lewis Pingo (Sixth Head) GEORGIVS III DEI GRATIA
Third Guinea 1802 unknown King George III Portrait by Lewis Pingo (Sixth Head) GEORGIVS III DEI GRATIA
Third Guinea 1803 unknown King George III Portrait by Lewis Pingo (Sixth Head) GEORGIVS III DEI GRATIA
Third Guinea 1804 unknown King George III Seventh Head (Military Portrait) GEORGIVS III DEI GRATIA
Third Guinea 1806 unknown King George III Seventh Head (Military Portrait) GEORGIVS III DEI GRATIA
Third Guinea 1808 unknown King George III Seventh Head (Military Portrait) GEORGIVS III DEI GRATIA
Third Guinea 1809 unknown King George III Seventh Head (Military Portrait) GEORGIVS III DEI GRATIA
Third Guinea 1810 unknown King George III Seventh Head (Military Portrait) GEORGIVS III DEI GRATIA
Third Guinea 1811 unknown King George III Seventh Head (Military Portrait) GEORGIVS III DEI GRATIA
Third Guinea 1813 unknown King George III Seventh Head (Military Portrait) GEORGIVS III DEI GRATIA