Can an old document still be legalised for overseas use?

The approach receiving authorities accept is this: Prepare the following for official Thai documents: (a) originals or government-issued certified copies, (b) a copy of the holder's ID or passport, (c) a power of attorney (we draft it), (d) the destination country and purpose for submission to a foreign authority or embassy, so the translation format matches its rules. Bundle with NAATI certified translation, Notary Public certification and Police Clearance in a single file to save weeks.