Help Identifying an old coin -Edward IV Half Groat?

[marco28uk]

Hi everyone.

I was wondering if anyone could help identifying this coin I have found.

Looking through the net I think it could be an Edward IV Half groat (twopence) but wanted some expert help.

I think it is Cantebury mint.

Can anyone confirm and help me with its value and where would be the best place to sell?

Thanks in advance

Mark