My Father expired in Oct 1997. After his death, my brother and mother stopped speaking with me. Now, After nealry 17 years, my brother has shown my father's will to me and my younger sister (we are one brother and two sisters, including me and I am eldest). As per father will, he left his self acquired property to my mother and some part to my brother. Subsequently my mother expired and has left all her share of property in brother name. Both the wills are handwritten and signed by two witnesses. But neither is registered.
How can I authenticate that these wills are true and final versions, esp my father's will?
If will is not registered, is it legally enforceable?
Am i required to sign off and validate the will?
What rights do I have to challenge the will or ensure that i am not deprived of my fair share.