Surplus property available for disposal under the provisions of RCW 43.19.1919 shall not be sold to state elected officials, officers or employees, except at public sale: Provided, however, An item valued at less than direct buy limit and declared surplus of a personal nature such as a chair, desk or bookcase, which in some way depicts or represents the office in which they have served, may be sold to an elected official after leaving office at private sale as used equipment: Provided further, That commissioned officers of the Washington state patrol or other statewide law enforcement activity retired for service or for nonmental or nonstress related disabilities may purchase his or her career service handgun at private sale as used equipment.