Since the LIC in principle have sanctioned the loan - 1. A certified copy may be organized from the Registrar's office, 2. joint inspection of the registrar's office by applicant and LIC may be organized and a public notice inviting objection to the loan, if any by any party who has interest can be published and in addition an indemnity may be executed. Please check this procedure with LIC. They are bound to accept this. Assuming that the original is not traceable, this is the process followed and many a sale transactions have taken place based on this due diligence process. In case LIC is not amenable then take it up legally.
vasudevan