(a) Upon ordering an estate to be probated, the court shall appoint a disinterested and competent person as an appraiser to appraise all of the decedent's real and personal property within the estate.

(b) It shall be the duty of the appraiser to appraise separately the true cash value of each article or item of property within the estate, including debts due the decedent, and to indicate the appraised value of each such article or item of property set forth in the inventory of the estate and to certify such appraisal by subscribing his or her name to the inventory and appraisal.