Do the property will be accepted without signature?

My father wrote a sample copy of property will by his own when he was ill. He ask me to arrange the advocate to write the original. But suddenly he was again hospitalized and i too forgot to make the arrangement of advocate to write the original will. Suddenly my dad expired. I am having his sample copy of will without his signature but he wrote on his own. Will this be useful to make further arrangement of making the original will. Please help.