Section 37 Indian Stamp Act
Section 37 of the Indian Stamp Act 1899 is about Admission of improperly stamped instruments. It is under CHAPTER IV (Instruments Not Duly Stamped) of the Act.
Admission of improperly stamped instruments.
[The [State Government]] may make rules providing that, where an instrument bears a stamp of sufficient amount but of improper description, it may, on payment of the duty with which the same is chargeable, be certified to be duly stamped, and any instrument so certified shall then be deemed to have been duly stamped as from the date of its execution.