Section 476.456 - Probate or magistrate judges may become special commissioners, when - salary or retirement compensation - credit for service as justice of peace1. Any person whether or not a licensed attorney having reached the age of sixty-five years, and having any prior judicial service except as a police judge or justice of the peace of twelve years or more on October 13, 1969, or having served an aggregate of twelve years continuously or otherwise as judge or commissioner of any of the courts provided for under the provisions of Sections 16 and 18, Article V of the Constitution, shall have the same rights and privileges upon the same conditions as are provided for the judges and commissioners specified in section 476.450.2. Any judge presently serving as a magistrate or probate judge is entitled to include any time he has served as a justice of the peace of this state in computing the prior judicial service required by this section.