signature
This means that the appointment letter bears the signature and seal of the President Of India. The rest of the appointments doesn't require the signature of the President as he can delegate this to other authority. In that case the appointment letter will bear the signature of the respective authority.
seal
Indus valley, signiture seal
Cartouche
To "seal a document" means to officially close or secure it, often using a seal or signature that signifies authenticity and approval. This practice can involve physically stamping or embossing a seal onto the document or applying a digital signature in electronic formats. Sealing a document is commonly used in legal, governmental, and corporate contexts to ensure the document's integrity and to denote that it has been endorsed by the appropriate authority.
Its called a cartouch.
signature
An Egyptian personal seal or signature is called a "scarab" or "signature seal." These seals, often made of stone or clay, were used to authenticate documents and denote ownership. The imagery and inscriptions on the seals typically included the owner's name and titles, and they played a significant role in administrative and ceremonial functions in ancient Egypt.
A mid 40's Japanese hanko signature seal is simply one of those cases that is crucial, that involves expert advisement regarding
A signature seal is an embossed or stamped mark used to authenticate documents, often serving as a legal signature in lieu of a handwritten one. It typically features an individual's or organization's name, logo, or emblem, and is commonly used in official documents, contracts, or certificates. The seal signifies the authenticity and approval of the document, providing an added layer of security and formality.
A seal was an old way to "authenticate" a signature, using a bit of wax and an embosser with the unique emblem of the signatory (government agency, corporation or private person). Much of this has been replaced by having a signature notarized.
The stamp goes next to or near the notary's signature. It should NOT cover any text or signature on the document, including the notary's signature and the stupid "notary seal goes here" statement.