Printing Plates - Raw or PSA Authentic Slabbed?

I was wondering if modern collectors here have a preference on collecting printing plates. PSA only authenticates the metal plates and does not grade them. Is it worth slabbing them? Would that make a difference to buyers if it was slabbed even with no grade?
Mike
Printing Plates - Raw or PSA Authentic Slabbed?
This is a public poll: others will see what you voted for.
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Comments
Only to prove authentic and to match majority of modern collections that are graded.
I have an Ohtani 2018 printing plate signed . Had it authenticated to verify if ever going to sell