As used in this chapter:

1. (a) “Public security” means a bond, note, certificate of indebtedness, or other obligation for the payment of money, issued by any county, city, or public district.
2. (b) “Instrument of payment” means a check, draft, warrant, or order for the payment, delivery, or transfer of funds.
3. (c) “Authorized officer” means any official of this State or any of its departments, agencies, or other instrumentalities, or any county, city, or public district whose signature to a public security or instrument of payment is required or permitted, or any deputy of such official who has been authorized by such official in writing to affix the official’s signature.
4. (d) “Facsimile signature” means the reproduction by engraving, imprinting, stamping, or other means of the manual signature of an authorized officer.