21.
—(1) Subject to this Act and the rules, any person may require a certified copy of or extract from any document enrolled in the register or any entry in the register or any other public record maintained by the Registrar under this Act and the rules, and thereupon a certified copy or extract signed by the Registrar and endorsed with his seal shall be given to that person.
(2) Every such copy or extract so signed and sealed shall be receivable as evidence of the contents of that document or entry in every case where those contents may under the rules of evidence be proved by means of any copy or extract.
(3) Nothing in this section shall be taken to dispense with the production of any original document in any case in which the production thereof might otherwise be required, nor to dispense with any proof which might otherwise be required as to the due making and execution thereof.