I Phone 3GS 16GB black on O2 ?

I phone 3GS in great condition. Still boxed with brand new USB cable, headphones and charger. Has been used and shows the usual signs of wear and tear, however the screen is immaculate. 16GB model been looked after well and kept in a case at all times. Will listen to sensible offers around £140 . Pick up preferred, however I can negotiate a delivery if required.