'65 Barracuda back-up lens unique?

No photos,i would like to see them before i pull the trigger.
Im growing weary of trying to find useable used ones.
Here are the Mexican taillight repops. Looks like MAYERS 1301L(R) are what they were molded from. Its a resin casting as there are small imperfections in the surface quality but for what you pay for them, they are nice. Im not sure the internal rib pattern is stock. DO NOT use WINDEX on these, or tighten in the bezel without a gasket. They will craze. The gasket allows the lens to expand and contract under the screw.
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