Whoever falsely and willfully assumes or pretends to be an officer or employee acting under the authority of the State of Mississippi or any department, agency or officer thereof; or of any county, municipality or any other subdivision of the State of Mississippi, or of any department, agency or officer of such county, municipality or subdivision, shall be guilty of a misdemeanor and punished for each separate such offense by a fine of not more than five hundred dollars ($500.00) or by imprisonment of not more than six (6) months in jail, or by both such fine and imprisonment.