The grant of probate or letters of administration shall not be delayed by reason of the reference to the Collector under section 50, sub-section (2), or of a motion by the Collector under section 54, sub-section (5); but the Court shall make no grant of probate or letters of administration until it is satisfied that a fee not less than that prescribed by this Act has been paid on the basis of the net value of the estate as furnished in the valuation accompanying the application, or in the amended valuation filed under section 54, sub-section (3):
Provided that the Court may grant probate or letters of administration notwithstanding that the prescribed fee has not been paid, to the Administrator-General in his official capacity on his giving an undertaking to the satisfaction of the Court that the said fee will be paid within such time as may be fixed by the Court.