(1) It is unlawful to use any field box that exceeds the total capacity of 4,900 cubic inches in the purchase, sale, or handling of oranges, grapefruit, or tangerines by a citrus fruit dealer from or for a grower, unless all field boxes exceeding this dimension shall have plainly stamped on both ends of the box in letters of the dimension of 1 inch in height and width the word “oversize.”
(2) It is unlawful to use any “tractor box” or other bulk harvesting equipment or special type field box that exceeds the total capacity of 4,900 cubic inches in the purchase, sale, or handling of oranges, grapefruit, or tangerines by a citrus fruit dealer from or for a grower, unless such tractor box or other bulk harvesting equipment or special type field box exceeding this dimension shall have plainly stamped on both ends of the tractor box or other bulk harvesting equipment or special type field box in letters of the dimension of 1 inch in height and width the actual content expressed in terms of standard field box equivalent as defined in s. 601.86. 
