These Lucas L539 lenses are correct for a Rover P4, Austin Cambridge, A50, A55, A60 and Westminster and Morris Oxford (not sure which models of that these apply to). They are brand new and unused, in perfect condition with perfect chrome rims, but do not come with original packaging. These are the same plastic lenses that are used on MGA 1500, AC Aceca, and other cars, but the Rover, Austin and Morris type has a unique chrome rim.
The Lucas Number is 575644 and the BMC part number is 17H 5372.
We also have a pair of these lenses in clear, in their original 1950s packaging, one with a BMC label! We carry a good supply of repro, used, and NOS L538 and 539 lenses in red, amber and clear with the more common type of rim, as used on MGA 1500, AC Aceca, Cobra, Turner, and other cars; see Related Products below. We have more that aren't listed, so if you don't see what you're looking for, please contact us.