The picture shows a collection of old Saudi Arabian banknotes from the fourth issue, which was introduced during the reign of King Fahd bin Abdulaziz Al Saud.
Minister of Finance's signature: His Excellency Mr. Mohammed Aba Al-Khail (who has the famous signature that extends across most denominations of this issue). In the very late printings of the same issue, it came with the signature of Dr. Ibrahim Al-Assaf.
Governor of the Saudi Monetary Agency's signature: His Excellency Mr. Hamad bin Saud Al-Sayari (who initially signed as "Acting Governor" and was later amended to "Governor" after his official appointment).
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