CALIFORNIA EVIDENCE: CIVIL AND CRIMINAL
...Presumptions & Burden of Proof
......Misc. Presumptions: Civil
.........Court-Related Presumptions
............Signature of Official
3 Cards On This Topic:

Signature of public official or notary public presumed genuine.

Signature of foreign public official presumed genuine if authenticated.

As signature of public employee presumed genuine and authentic, trier of fact required to accept documents as authentic in absence of evidence to contrary.