Difference between lowlight one piece and two tail light bezels?

[Braukuche]

I'm going to look at tail light bezels for my '56 Saturday and the seller and I are not sure how to tell the difference between the early style two piece bezels and later one. He has a bunch of them but they all look the same, so can anyone explain the difference please?
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Go Reds! Smash state!

Retirement is here!
1956 Ghia
1959 SO-23 Westfalia
1960 double cab
1960 Baja Bug
1963 stretched double cab
1962 Golde sunroof Ghia
1963 356 B coupe
1963 Notchback
1967 21 window less rusty now

[Loren]

The early tail light lenses had a separate chrome trim ring while 58-59 Ghia lenses had a chrome metal ring that the lens was molded into (I believe newer repro 58-59 Ghia lenses have a plastic chrome ring?). You often see 58-59 Ghia chrome rings for sale with the lenses broken out of them and sold as the earlier style ring, though they won't fit because the opening is smaller. Aside from the smaller opening you can also tell the difference by a raised ridge on the inside of the opening on a 58-59 Ghia ring. If you had a milling machine I imagine you could make a jig and mill the opening in the later ring out bigger to fit the earlier style lens, though you would have to rechrome the ring (not very cost effective, but an option). If you need images to clarify the differences let me know.

[Braukuche]

[aerosilver]

You need the 2 piece style, which if I read it right your seller has.

Picture of the back of the 2 piece ring/lense.

[Braukuche]

[Loren]

For reference here is a 58-59 tail light ring with the lens broken out.

You can see there is a raised ridge round the opening for the lens.

Here is a detail of the ridge. If you have patience you can grind this ridge away and a 56-57 lens will fit, though getting the edges smooth takes some time and it will need to be re-chromed.

[aerosilver]

I have a spare chrome ring I can let go, PM me.