My father passed away recently & he had prepared his will on a plain paper alongwith the signature of 2 witnesses. We are 2 brothers with our respective families & our mother is staying with my elder brother. My father had 2 properties in his name - one apartment (he was the sole owner) which he has bequethed to my mother in his will & subsequently to my elder brother in the event of my mother passing away. The other property where my father is the joint owner (2nd name) alongwith me, he has bequethed to my mother & similarly to me in the event of my mother passing away.
My question is whether this will made on a plain white paper is valid legally & if not, then what is to be done to make it legally valid in the court of law. We both brothers respect our father's decision/wish & we would like to avoid any disputes tomorrow arsisng out of the share of the 2 properties. Will be very thankfull & obliged to receive your comments.