165.024 Crystals for CB or HF case. Any difference?

Three part question really. . I’m asking if anyone knows if there are any differences in the crystals, or tension rings of either CB or HF case.
I’ve searched and searched but the only difference I’ve found mentioned was in the dome shape between the Factory service ones and the original ones. What size were they?
Can anyone elaborate and supply part numbers as I’m looking for an original and not a service one unless it’s strongly advised against an NOS one because they go brittle? Maybe…

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