If an agreement to sell was signed in 2001 but registered much later, the stamp duty is calculated based on the ready reckoner rate of the agreement year, not the registration year. You need the 2001 rates to prove you did not underpay.
Legal and real estate forums like have active communities. A user recently asked for the "ready reckoner rates of mumbai for the year 2001," and a practicing advocate replied, "You may perhaps not be able to get the prevailing rate... However you can contact any deed writer who may be having some copies of the documents registered at that period". Posting a clear query on such forums is a free and low-effort way to get leads from professionals who have dealt with this issue before.
If an agreement to sell was signed in 2001 but registered much later, the stamp duty is calculated based on the ready reckoner rate of the agreement year, not the registration year. You need the 2001 rates to prove you did not underpay.
Legal and real estate forums like have active communities. A user recently asked for the "ready reckoner rates of mumbai for the year 2001," and a practicing advocate replied, "You may perhaps not be able to get the prevailing rate... However you can contact any deed writer who may be having some copies of the documents registered at that period". Posting a clear query on such forums is a free and low-effort way to get leads from professionals who have dealt with this issue before.