Indian Succession Act 1925

My dad has 7 children (5 daughters & 2 sons).  My dad's self earned income & properties are shared among all ourself as per his WILL, which was executed in year 1945 in front of district judge. 

In the WILL, my dad stated as "Any other properties I may acquire during my life time to be equally divided amony my two sons after my death".  My dad died in the year 1957.

In the year 1953, my dad purchased land. The address is not listed in the WILL as it was purchased after the WILL in made. Since in the WILL its clearly stated that the new property acquired by him is divided equally between two sons.

My question is does my sisters or their children or my children or grand childrens has any rights for this property.