We Want To Know What Stamp Duty Is Payable

We are in possession of 850shares of ACC Ltd. certificates are in name of our Father who expired 20years ago.we want to have now get it traffered in our all family members that is for kindly advise us how much Stamp duty pay for Succession certificate and Fees Payable in maharastra. We want to get it done urgently.shares certificates are worth Rs.15Lacs.