A.
It shall be unlawful for any person to sell or offer for sale or advertise for sale at retail for use in internal-combustion engines, motor vehicles or otherwise any gasoline or other petroleum products unless such seller shall post and keep continuously and conspicuously posted at the premises where such sale or offer for sale or advertisement for sale of such products is made signs or placards not less than seven inches in height and eight inches in width nor more than 12 inches in height and 12 inches in width, stating clearly and legibly in letters and numbers of uniform size and color with respect to each such gasoline or other petroleum product the retail selling price or prices per unit thereof, the combined state and federal tax applicable thereto and the total retail price including tax to a purchaser or prospective purchaser in three separate sets of figures, together with the name, trade name, brand, mark or symbol and grade or quality classification, if any, of such gasoline or other petroleum products. All letters, figures or numerals of each sign or placard affixed thereto, marked thereon, imprinted thereon, placed thereon or embossed thereon shall be at least 1/4 inch in height, and all of the lines or marks used in the making or forming of any such letters, figures or numerals which are a part of such signs shall be at least 1/8 inch in width. The stating of a fractional part of a figure shall be indicated so that the numerator and denominator are of equal size and the combined overall size shall be the same as that of a whole number. If such gasoline or other petroleum products are sold by the use of or through or from any pump or other device, such sign or placard shall be inserted in a bracket no more than 12 inches in height and 12 inches in width attached to such pump or dispensing device from which such gasoline or other petroleum products are dispensed, except that the selling price of the products as usually contained in the face of computing pumps through which such products are dispensed sufficiently complies with the provisions of this subsection, thus eliminating the necessity of any additional price, sign or placard. In any case, such sign or placard shall be so located and placed that it may easily be seen or read by a purchaser or prospective purchaser of such products.
B.
No other sign or placard stating, referring to or implying the price of such gasoline or other petroleum products, except a facsimile of the sign or placard as specified in the preceding Subsection A, shall be posted or maintained on or within the vicinity of the premises at which such gasoline or other petroleum products are sold or offered for sale or advertised for sale by such person, directly or indirectly.