Letters of administration in case of investments in shares of listed companies

Dear sir, I am writing fromDelhi. I am a citizen of Nepal. My father, a Nepalese citizen held investments in few companies in India since early 1950s. For a few years, he was based in Calcutta and He died in Calcutta in 1977. He held investments in about 10 companies, 4 out of which have their registered office in Mumbai. Like my father, I am also a citizen of Nepal. I would like to know if I can apply to the Bombay High Court for grant of Letters of administration to the Indian estate of my late father. The proposed application for the grant of Letters of administration will need to be filed under a power of attorney to an Indian national. Reason being - I am a Nepalese citizen and I will not be able to fulfill the requirements of KYC as I can not open a savings bank account and Share trading account and Demat account. As a Nepalese, I can not obtain an Aadhar card nor do I have a permanent address proof. If my constituted attorney applies to Bombay High Court for the grant of letters of administration along with No Objection and consent affidavit filed by the heirs / beneficiaries of my fathers estate, and is granted the same to become the administrator, then he can complete the entire procedure of transmission of shares to the name of estate of my father. Or if a Decree, order of trusteeship or succession certificate can be granted by the High Court in favour of an Indian national, then also the estate can be claimed. Otherwise the KyC norms would be an obstacle. I will be obliged if you could revert on this. Thanking you Chhaya Pant Sharma