CA Gov't Code Section 5501

Any authorized officer may, after filing with the Secretary of State his manual signature certified by him under oath, execute or cause to be executed with a facsimile signature in lieu of his manual signature:

(a)

Any public security, provided that at least one signature required or permitted to be placed thereon shall be manually subscribed; and

(b)

Any instrument of payment. Upon compliance with this section by the authorized officer, his facsimile signature has the same legal effect as his manual signature.