No sign in an A district shall be illuminated. No more than two sale or lease signs shall be placed on any lot, and no such sign shall have an area in excess of twenty-four (24) square feet, except in conformance with Sections 17.52.460 and 17.52.470 (Subdivision). In other respects, Section 17.52.020 shall control. (Prior gen. code § 8-25.7)