Help with attribution required on this 1665 coin

[youliveyoulean]

Hi all,

could any one help me with what the coin in the attached photos is? Weighs approx 6.67g and diameter is approx 23mm. I believe it is Isle of Man. Thanks.

 

[Rob]

Don't know. It is too early for IOM issues. The 1665 pattern farthing was only struck in London as far as I am aware. Presumably a modern concoction.