Answer: paraph

AnswerCrossword Clue
PARAPHFlourish made after a signature.
PARAPHSignature flourish
PARAPHSignatory flourish
paraphto initial (to mark with the first letters of one's name)
paraphflourish made after a signature, as in a document, originally as a precaution against forgery
parapha flourish made after a signature, as in a document, originally as a precaution against forgery.