Proof of signature, position or seal
75It is not necessary to prove the signature or official position of the person printing or certifying any copy or extract admissible in evidence under section 72, 73 or 74 or to prove the Great Seal or other state seal affixed thereto or to prove that the original document or the public records from which the copy or extract purports to be made in fact existed, or were deposited or kept in the custody of the person so certifying.