Which of the following details is NOT required on a notary stamp?

The detail that is not required on a notary stamp is the county of residence. In Colorado, notary stamps must include essential information such as the notary's name and title, the expiration date of the notary's commission, and the notary's commission number. These elements are crucial for identifying the notary and the validity of their authority.

The county of residence, while it might provide additional context about the notary's location, is not mandated by law to be included on the stamp. This requirement ensures that the stamp provides clear and necessary information pertinent to the notarial act, which is crucial for maintaining the integrity of notarizations. Therefore, omitting the county of residence is permissible under Colorado notary law.