A paper or antique document expert is often referred to as a manuscript specialist or a antiquarian.
You would call it a permit or authorization document.
You can replicate anything you like, you just cannot call it an "antique," that is fraud.
Expert, Knowledgeable, etc..
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antique
pullicologist
I guess you could call it an antique. It's worth at least $2 for it's silver content.
An expert at table talk is called a deipnosophist.
Horologist
A mathematician.
Horologist
Horologist