1955-57 Headlight install What parts am I misssing?

[Maximus]

I was under the impression that there was just a trim ring that hooked to the spring, and had two eyes to be held down by the two screws...
but the more i look online at $80 headlight assemblies the photos make it seem like there is another ring that goes between the bucket and the retaining trim???? am i just getting caught up in an optical illusion??

this is what I have...


these are the full assemblies I am looking at


this is the only part I THOUGHT i needed....