The Privy Seal and State Seal

Privy Seal (Gyoji)  

The seal is affixed to documents such as Imperial rescripts, proclamation sentences of laws, cabinet orders, treaties, instruments of ratification, ambassadors' credentials and their dismissal documents, documents of general power of attorney, consular commissions, letters authorizing foreign consuls, letters of appointment or dismissal of government officials whose appointment requires the Emperor's attestation, and letters of appointment of officials of the fourth court rank and upwards. It has “Tenno Gyoji” carved on it.

State Seal of Japan (Kokuji)

The State Seal is used only for certificate decoration (Kunki), and it has “Dai Nippon Kokuji” carved on it.