A facsimile signature is a stamp that is intended to resemble the actual signature of a government official. There are regulations concerning what documents a facsimile signature may be used on, but it is generally valid for signing financial instruments, such as checks or public securities. Different states and counties have varying rules about facsimile signatures.
Facsimile signatures are intended to replace manual signatures. This can save a government official precious time, and it standardizes the appearance of the signature. It is important for someone's signature on a financial document to always appear the same, as signature verification is one way that banks determine whether or not a check is fraudulent.