right, i managed to get the remains of the front plate off, i cleaned the top edge up and used some scotch brite I can see a faint "T" as apposed to "CT" a faint 5 and a faint 2 perhaps this is wishfull thinking or iam seeing what i want to see..... the plate goes into the SMV unit at work tomorrow for chemical and heat treatment.
i took a photo of the plate section but the camera cant pic up the detail.

between the red dots is where the ghosting appears, the T the 2 and the 5 are very clear i tried to zoom in but the camera is basic. hopefully i can recover it !