§ 67-a. Fees for certification or exemplification. Whenever there shall be presented to any public officer for certification or exemplification, a previously prepared legibly typewritten or printed copy of any document, paper, book or record in such officer's custody, the fees in such case, for certification or exemplification, shall be at the rate of three cents for each folio; but the minimum total charge for certification or exemplification in all cases shall be twenty-five cents.