1806 Half Penny... Discovered!

Normally when I'm sifting through my shrapnel bag I get a good few undated/unrecognisable coins that I have to throw into the 'ultimate unreadable shrapnel bag' (hahaha). But this afternoon the first coin I looked at, I could recognise it!

This is a United Kingdom 1806 Half Penny. Great structure still in terms of weight, faded though which is a shame but what do you expect for a coin 210 years old!

In the year 1806 -

20th March - Construction of Dartmoor Prison to house prisoners of war begins.
November - Napoleon declares a Continental Blockade against the British.
The Monarch was George III.
Prime Minister was William Pitt the Younger of The Conservative Party.