The City Council may, by resolution, authorize the issuance of stamps, stickers, or other methods of identification indicating upon their face the month or other period of time during which the authorization is effective for a consideration to be determined by the City Council as just and equitable, which stickers, stamp or other device shall be visibly placed in the car and shall constitute authorization for the parking of such car upon and within any parking lot owned and operated by the City of Sebastopol during the period of time indicated upon said stamp, sticker or other device. No person shall park or leave any vehicle in any space designated as “reserved” or other designation indicating its use for permit parking.