King Ahaz's seal is a bulla (impressed piece of clay) originating from the 8th century BCE.
The place of discovery of this seal is unknown, and it is currently part of Shlomo Moussaieff's private collection.
The seal contains an ancient Hebrew inscription mentioning the name of Ahaz of Judah, as well as the name of his father, Jotham (Jotham), identifying Ahaz as the "king of Judah".
[1] Another extra-biblical source regarding the historicity of Ahaz comes from Tiglath-Pileser III, mentioning tributes he received in gold and silver from Ahaz, and from the bulla known as Ushna seal.
[2] Unprovenanced artifacts that originate in the antiquities market are subject to authentication disputes.