105.273.  Definitions. — As used in sections 105.273 to 105.278

  (1)  "Public security" means a bond, note, certificate of indebtedness, or other obligation for the payment of money, issued by this state or by any of its departments, agencies or other instrumentalities or by any of its political subdivisions;

  (2)  "Instrument of payment" means a check, draft, warrant or order for the payment, delivery or transfer of funds;

  (3)  "Authorized officer" means any official of this state or any of its departments, agencies, or other instrumentalities or any of its political subdivisions whose signature to a public security or instrument of payment is required or permitted;

  (4)  "Facsimile signature" means a reproduction by engraving, imprinting, stamping, or other means of the manual signature of an authorized officer;

  (5)  "Contract", means any contract executed by a political subdivision of this state and approved by the governing body of the political subdivision.