IEA Section 79

The Court shall presume to be genuine every document purporting to be a certificate, certified copy, or other document, which is by law declared to be admissible as evidence of any particular fact and which purports to be duly certified by an officer of the Central Government or of a State Government, or by any officer in the Slate of Jammu and Kashmir who is duly authorized thereto by the Central Government;
Provided that such document is substantially in the form and purports to be executed in the manner directed by law in that behalf.
The Court shall also presume that any officer by whom any such document purports to be signed or certified held when he signed it, the official character which he claims in such paper.