(a) It shall be unlawful for an employee to work, perform or to exhibit or display specified anatomical areas in an adult entertainment establishment without an adult entertainment permit in his immediate possession at all times.

(b) No person charged with violating this section shall be convicted if he produces to the city manager within 72 hours of detention or in court a permit theretofore issued.

(c) Upon receipt of a properly authenticated notification from the city manager verifying issuance of a valid permit, the clerk of the court is authorized to dismiss such case at any time prior to the defendant's appearance in court.