Section 708(d) in Police Regulations, Bengal , 1943
(d)When Government treasure is loaded for despatch by railway the doors on the off side of the van shall be safely secured from the inside and all doors that can be opened from the outside shall be secured by good padlocks supplied by the Treasury officer. The officer-in-charge of the escort shall obtain a receipt for these padlocks from any guard which may relieve him, or from the Treasury officer of destination.
