@bithi_dutta
I have heard that it is not permissible to mention the name of an officer in the seal as it may impersonate others. Attestation seal shall only bear the designation & affiliations (office name/ locations etc.)of the officer concerned and, not his name. I have not seen any govt. order to this effect! The harsh reality is that most of the officers having attestation power indicate their names in the official seals and, this has become a common practice.