As per our view Sir in the present case we need to take the Agreement of sale value entered in 2000 and explain the reason for delay in registration.
Capital Gain in this case arises when the possession is handed over. If you have not done the same then with proper documentation then you need to declare the same in the year 2013 when the actual registration of transfer is made.
50C provisions are applicable but need to prove with the help of Agreement of Sale that actually the transaction was entered at a lesser value.