Iphone 4 charger (Ashton-U-Lyne OL6)

Does anybody happen to have a spare iPhone 4 charger cable (the old wide ones as shown in the pic) lying around please? I'm trying to help a lady up the street get her old phone running for her but the ones in my local shop are known for killing batteries so hoping someone still has a genuine one she can use, or one that's been used and known to work and won't break the phone.