We have made enquiries with a nationalised bank and the bank officer has mentioned verbally:
The HO of the bank issues circulars to all branches on process/procedures/practices to be followed by all staff and as per that bank employee who has processed the cheque/passed the cheque and even cashier are required to obtain double signature on the reverse of the self cheque.
Under RTI you can obtain this circular.
If the branch where you have a/c is uncooperative you may use your resources and rapport and obtain clues from other branch and proceed to obtain copies.
Once you have lodged complaint with BM/Nodal Officer/MD, the bank shall be under obligation to initiate enquiry in line with their circulars to all branches on process/procedures/practices and you are within your rights to obtain the copies of all material evidence including the letters/reprimands issued by the bank to its staff in pursuance to your complaint and it shall be useful for your defense.
You are accountable and responsible for loosing cheque book and not reporting it to the bank.
Bank staff compares the signatures on the impression of naked eye e.g. flow etc.