1804, Great Britain. Proof Copper Pattern Dollar Coin. Thick Planchet! NGC PF62!

Mint Year: 1804
Mint Place: Soho mint (London) 
Condition: Certified and graded by NGC as PF-62!
Reference: ESC-146A (R3!), L&S 79, Bull 1956, KM-Tn1a. 
Denomination: Dollar (Bank Token of 5 Shillings) - Proof Copper Pattern -  Struck on a thick (4mm) flan!
Weight: ca. 40gm
Material: Copper
Diameter: 41mm

Obverse: Laureate and draped bust of George III right.
Legend: GEORGIUS III DEI GRATI REX (no stop, only seen on the pattern issue!)

Reverse: Turreted crown above oval order of the garter with scenery (Britannia seated left, holding spear and wreath and leaning on oval shield with arms of the United Kingdom) inside. Date (1804) below.
Legend: BANK OF ENGLAND

 

George III (George William Frederick; 4 June 1738 – 29 January 1820) was King of Great Britain and King of Ireland from 25 October 1760 until the union of these two countries on 1 January 1801, after which he was King of the United Kingdom of Great Britain and Ireland until his death. He was concurrently Duke of Brunswick-Lüneburg and prince-elector of Hanover in the Holy Roman Empire until his promotion to King of Hanover on 12 October 1814. He was the third British monarch of the House of Hanover, but unlike his two predecessors he was born in Britain and spoke English as his first language. Despite his long life, he never visited Hanover.

George III's long reign was marked by a series of military conflicts  involving his kingdoms, much of the rest of Europe, and places further  afield in Africa, the Americas and Asia. Early in his reign, Great  Britain defeated France in the Seven Years' War, becoming the dominant European power in North America and India. However, many of its American colonies were soon lost in the American Revolutionary War, which led to the establishment of the United States. A series of wars against revolutionary and Napoleonic France, over a twenty-year period, finally concluded in the defeat of Napoleon in 1815.

In the latter half of his life, George III suffered from recurrent and, eventually, permanent mental illness.  Medical practitioners were baffled by this at the time, although it is  now generally thought that he suffered from the blood disease porphyria. After a final relapse in 1810, a regency was established, and George III's eldest son, George, Prince of Wales, ruled as Prince Regent.  On George III's death, the Prince Regent succeeded his father as George  IV. Historical analysis of George III's life has gone through a  "kaleidoscope of changing views" which have depended heavily on the  prejudices of his biographers and the sources available to them.