The Superintendent of Buildings shall be responsible for appropriate public identification of areas designated as landmarks, landmark sites and Historic Districts on the Landmark and Historic District Map. The Landmarks Preservation Commission must approve the size, style, color, typography, material of construction and wording of all privately owned signs identifying landmarks, landmark sites and properties within Historic Districts, prior to installation, consistent with the provisions of Article
VI.
If any provisions of this chapter or the application
thereof to any person or circumstances is held invalid, the remainder
of this chapter and the application of such provisions to other persons
or circumstances shall not be affected thereby.