TC fog light lenses

[Jennifer and Hugh Pite]

I have a couple of later TC fog lights (SFT 462) and note that the lenses are different. One of the lenses has a circular metal piece and a horizontal bar behind the glass, the other only has the circular metal piece. The one without the bar has sft 462 cast in the glass lens and the one with the bar has no such number. I have also found that the bar-less lens is used on the Jaguar MK 7. Does anyone know which is correct for the TC? Regards, Hugh Pite