MINT BLACK IPHONE 16GB ?

Hi i am selling my PAYG IPHONE 4 Mint condition no scratches on screen i have been using the phone on the the 02 NETWORK but am asuming it is unlocked i do not have the original box or the original charger but i do have a box and a charger+ data cable CASH ON COLLECTION first to see will buy Thanks for looking text or call me on 07827259470