Are these hands tritium or luminova?

[Cloitus]

Hello, I'm looking to buy a rolex submariner from 1991.
It is a pre ceramic sub and looking to get an extra set of eyes on the hands to see if they are original or luminova service replacements.

I am aware that the hands aged lighter than the dial on ones from this period however is it possible to know from the photos if they are tritium but have aged lighter than dial or if they are replacement hands.

Kind regards,

Cloitus



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