Ireland, 1693, 1/2 Penny, KM#109, copper, mintage- ? from my 2003 Krause world coin catalog. grade/value VG-$7.50 F-$12.50 VF-$60.00 XF-$175.00 hard to tell what your coins grade is G-VG ??? I am sure the values are higher now.... not sure what they are now ? wait for more experienced opinions... @Numismat
It is a 1693 William & Mary Irish Half Penny. Worth about $50 from what I can tell of the condition of yours. If you can find a buyer who knows what it is and wants it.