KG I or KG III?

[Auriemma]

When I found this coin, the group of MDers I was with said it was most likely a KGIII halfpenny, but could be a KGI fathing. 85% it's a KGIII, but it's tough because of the condition of the coin.
I put together a comparison image for you to take a look at... assuming both the 1806 and the 1722 are the same diameter (my coin is 1.125")
KGI being above and KGIII being below. What do you think?

 

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[Iron Patch]

It's George III.

 

[jerseyben]

KGIII, 1799 or later.