King George III One Penny Metal Detecting Find

King Geroge III One Penny

King George III Reign: 25 October 1760 – 29 January 1820
Age of Coin: 206 years old to date 2012.

Obverse:

Reverse:

Date:

Part of the date is missing but if you look closely you cans see 06 present see below highlighted.

we know King George III Reigned between 1760 and 1820, so the 2 missing numbers on the date has to be 18, making the coin 1806.
it cannot be 1706, because George was not the monarch at this time.
King George II would have been.