Section 12421 Of Article 2. Duties From California Government Code >> Division 3. >> Title 2. >> Part 2. >> Chapter 5. >> Article 2.

. The Controller shall authenticate with his official seal all warrants drawn by him, and all copies of papers issued from his office. The Controller may affix his official seal to documents which he issues in any manner he desires including printing, facsimile signature machine, rubber stamp, die, and sealing machine.