“Each notary public shall provide keep and use a seal which is either a photographically reproducible engraved embosser or a black inked rubber stamp to be used on the document being notarized.” To be legally recognized the official seal must contain: The notary’s name the assigned commission number “Notary Seal” “Notary Public” State of Missouri” their expiration date and the county for which they are commissioned.
Source: RSMo 486.285[1]