The bond shall be manually signed by the treasurer of the city or county, or a facsimile signature may be reproduced thereon.
A facsimile signature of the treasurer is one that is printed, lithographed, engraved, stamped, or otherwise mechanically reproduced.
Source:
Section 6460.5, https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=SHC§ionNum=6460.5..