Section 1453 Of Article 3. Presumptions Affecting Acknowledged Writings And Official Writings From California Evidence Code >> Division 11. >> Chapter 1. >> Article 3.

. A signature is presumed to be genuine and authorized if it purports to be the signature, affixed in his official capacity, of:
  (a) A public employee of the United States.
  (b) A public employee of any public entity in the United States.
  (c) A notary public within any state of the United States.