(a) Total sign area permitted shall not exceed one and one-half square feet for each foot of storage frontage. Maximum sign height shall not exceed four feet for uses with a frontage of fifty feet or more and shall not exceed two feet, six inches for uses with a frontage under fifty feet. Illumination for any sign shall minimize glare upon a public street or adjoining property.
(b) Design. Space for a sign shall be of an integral design with the principal building and not project from the front thereof more than ten inches unless it is an integral part of a sidewalk canopy.
(c) Extension. Signs shall not extend more than three feet above that level of the principal building occupied by the use advertised and should be no higher than the parapet wall or roof-line; provide however that for a motor vehicle service station such a sign displaying only the identifying name or symbol of such station may be supported on a free-standing structure located in front of such station but not projecting over the street line and not located within less than twenty-five feet of the side of any adjacent lot in any R-District. No such free-standing sign shall exceed twenty feet in total height and its sign area shall not exceed fifty square feet.
(d) Special Perpendicular. A specific style and shaped sign mounted on a specific type wrought iron or scroll type bracket as recorded in the offices of Planning and Zoning and listed as Special Perpendicular #89-2-413. The sign must be painted white with black lettering and the mounting bracket must be painted black. This style sign must be properly maintained at all times.