Fruit baskets to be marked as to number of pounds—Any manufacturer or shipper of or dealer in peach baskets or other fruit packages designed for the shipment of peaches, grapes and plums, who shall sell or offer to sell such peach baskets or other fruit packages without marking or causing to be marked in a plain manner on the outside, otherwise than the bottom of such baskets or packages, the capacity of each basket or package in pounds at the rate of 1 pound for each 43.008 cubic inches of space contained in such basket or package, shall be guilty of a misdemeanor.