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⅓ Guinea - George III

Features

Issuer United Kingdom
King George III (1760-1820)
Type Standard circulation coins
Years 1797-1800
Value ⅓ Guinea (7⁄20)
Currency Pound sterling (1158-1971)
Composition Gold (.9167)
Weight 2.8 g
Diameter 17 mm
Shape Round
Technique Milled
Orientation Medal alignment ↑↑
Demonetized Yes
Number
N#
13159
References KM# 620
Standard Catalog of World Coins (86 volumes).
, Sp# 3738
Standard Catalogue of British Coins (37 volumes).

Obverse

Laureate portrait of King George III right, legend around.

Script: Latin

Lettering: GEORGIVS III DEI GRATIA.

Translation: George the Third by the Grace of God

Engraver: Lewis Pingo

Reverse

Crown centrally with legend around and date below.

Note: date within line of legend

Script: Latin

Lettering:
MAG·BRI·FR·ET·HIB·REX
·1799·

Translation: King of Great Britain, France and Ireland

Engraver: Lewis Pingo

Comments

Third guineas were struck at 133½ to the pound troy, giving a standard weight of 8/89 troy ounce (43.1 grains).

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Date VG F VF XF AU UNC Frequency
1797  Photo $ 1300 36%
1798  Photo $ 450 $ 450 32%
1799  Photo 7%
1800  Photo 32%

Values in the table above are expressed in USD. They are based on evaluations by Numista users and sales realized on Internet platforms. They serve as an indication only; they are not intended to be relied upon for buying, selling or exchanging. Numista does not buy or sell coins or banknotes.

Frequencies show the percentage of Numista users who own each year or variety among all the users who own this coin. Since some users own several versions, the sum may be greater than 100%.

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Numista Rarity index: 77 Search tips
This index is based on the data of Numista members collections. It ranges from 0 to 100, 0 meaning a very common coin or banknote and 100 meaning a rare coin or banknote among Numista members.
Bullion value: USD 357.29 Search tips
This value is given for information purpose only. It is based on a price of gold at 139 201 USD/kg. Numista does not buy or sell coins or metal.
Actual gold weight: 0.083 oz
Current gold price: 4329.62 USD/oz (see gold price )

Past sales

Pictures Sale Date Version Grade Sold price
Picture 1 of a sold ⅓ Guinea - George IIIPicture 1 of a sold ⅓ Guinea - George IIIPicture 1 of a sold ⅓ Guinea - George IIIPicture 1 of a sold ⅓ Guinea - George III
Heritage Auctions
2026 January 12 NYINC World & Ancient Coins Platinum Session and Signature® Auction - New York 3129
Lot 32134
Internet Archive
12 Jan 2026 1797 UNC
(NGC MS64)
USD 1830.00
(incl. buyer's premium)
Picture 1 of a sold ⅓ Guinea - George IIIPicture 1 of a sold ⅓ Guinea - George III
Heritage Auctions
2025 December 8 Spotlight: Great Britain World Coins Showcase Auction 61575
Lot 25101
Internet Archive
8 Dec 2025 1797 UNC
(PCGS MS63)
USD 1320.00
(incl. buyer's premium)
Heritage Auctions
2025 June 8 Spotlight: Great Britain World Coins Showcase Auction 61515
Lot 23083
Internet Archive
8 Jun 2025 1797 UNC
(NGC MS63)
USD 1110.00
(incl. buyer's premium)
Picture 1 of a sold ⅓ Guinea - George IIIPicture 1 of a sold ⅓ Guinea - George III
Heritage Auctions
Wednesday & Thursday World & Ancient Coins Select Auction 232243
Lot 64471
Internet Archive
20 Oct 2022 1797 UNC
(NGC MS63)
USD 720.00
(incl. buyer's premium)
Picture 1 of a sold ⅓ Guinea - George IIIPicture 1 of a sold ⅓ Guinea - George IIIPicture 1 of a sold ⅓ Guinea - George IIIPicture 1 of a sold ⅓ Guinea - George III
Heritage Auctions
Wednesday & Thursday World & Ancient Coins Select Auction 232530
Lot 64333
Internet Archive
17 Jul 2025 1797 AU
(NGC AU Details (Bent))
USD 384.00
(incl. buyer's premium)
Picture 1 of a sold ⅓ Guinea - George IIIPicture 1 of a sold ⅓ Guinea - George IIIPicture 1 of a sold ⅓ Guinea - George IIIPicture 1 of a sold ⅓ Guinea - George III
Heritage Auctions
Wednesday & Thursday World & Ancient Coins Select Auction 232516
Lot 63118
Internet Archive
10 Apr 2025 1797 USD 312.00
(incl. buyer's premium)
Picture 1 of a sold ⅓ Guinea - George IIIPicture 1 of a sold ⅓ Guinea - George III
Heritage Auctions
Wednesday & Thursday World & Ancient Coins Weekly Online Auction 232013
Lot 64359
Internet Archive
25 Mar 2020 1798 UNC
(NGC MS63)
USD 456.00
(incl. buyer's premium)
Picture 1 of a sold ⅓ Guinea - George IIIPicture 1 of a sold ⅓ Guinea - George IIIPicture 1 of a sold ⅓ Guinea - George IIIPicture 1 of a sold ⅓ Guinea - George III
Heritage Auctions
2019 April 25 - 29 Central States World Coins & Ancient Coins Signature Auction - Chicago 3073
Lot 33007
Internet Archive
29 Apr 2019 1798 UNC
(NGC MS62)
USD 408.00
(incl. buyer's premium)
Picture 1 of a sold ⅓ Guinea - George III
Katz
Auction 86
Lot 123
Internet Archive
10 Jun 2023 1798 AU USD 381.73
(EUR 331.00)
(+ buyer's premium)
Picture 1 of a sold ⅓ Guinea - George IIIPicture 1 of a sold ⅓ Guinea - George IIIPicture 1 of a sold ⅓ Guinea - George IIIPicture 1 of a sold ⅓ Guinea - George III
Heritage Auctions
Thursday World & Ancient Coins Weekly Online Auction 231945
Lot 61279
Internet Archive
7 Nov 2019 1798 AU
(NGC AU Details (Bent))
USD 192.00
(incl. buyer's premium)
See all 16 past sales

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