A person has acquired a land on or before 01/04/1981 by way of Gift/Partition.Now he wants to sell the land in Financial year-2012-13. To calculate the Value of cost of acquistion at inflated indexed price, first value as on 01/04/1981 is needed to be determined. If no value as on 01/04/1981 is available, in that case whether current municipal value of the land can be taken to determine the value as on 01/04/1981 by taking reverse inflation index??