Any idea what this 1595 coin is?

Aethelred

This coin is 20mm and dated 1595, that is all I know.

BCNumismatics

Micheal,
The style of your coin suggests that it was struck by one of the states up in northern Italy.I think it could be from Ferrara.

Unfortunately,there isn't a Krause catalogue for pre-1601 coins though.

Aidan.

STLNATS

Try Parma and Piacenza under the Farnese family.

Hussulo

I think Aidan and STLNATS are correct it look a lot like:

http://www.coinarchives.com/w/lotviewer.php?LotID=569054&AucID=414&Lot=2626

I know its not a British coin but the reverse looks a lot like Britannia.
The effigy of Britannia was probably inspired by the Roman coins of Hadrian and Antoninus Pius
which were minted around the second century A.D.

Aethelred

Thanks everyone for the hints.