Source : Webster's Revised Unabridged Dictionary (1913)

Appraiser \Ap*prais"er\, n. [See {Appraise}, {Apprizer}.]
   One who appraises; esp., a person appointed and sworn to
   estimate and fix the value of goods or estates.

Source : WordNet®

appraiser
     n 1: one who estimates officially the worth or value or quality
          of things [syn: {valuator}]
     2: one who determines authenticity (as of works of art) or who
        guarantees validity [syn: {authenticator}]