An affidavit of the pleader or his clerk, of the due signature of any admissions made in pursuance of any notice to admit documents or facts, shall be sufficient evidence of such admissions, if evidence thereof is required.

An affidavit of the pleader or his clerk, of the due signature of any admissions made in pursuance of any notice to admit documents or facts, shall be sufficient evidence of such admissions, if evidence thereof is required.