Any attorney-at-law, after having been duly commissioned and qualified, shall, upon request, receive from the Clerk of the Supreme Court as many certificates of his commission and qualification as he shall require for filing in the county clerks' offices of this State, and upon receipt thereof, such attorney may present the same, together with his autographed signature, to such county clerks as he may desire for filing.
N.J.S. § 2A:13-9