If any markings are used or required to be used by this chapter on any container of honey to identify the container or describe its contents, the markings shall be plainly and conspicuously marked, stamped, stenciled, printed, labeled, or branded in the English language, unless the container is intended for and is shipped outside of the United States, in letters which are large enough to be readily discernible by any person, upon the top, front, or side of the container. If the marking is on a placard which is used in a display, the placard shall be placed or posted in such a position that there is no doubt as to the product which it is to identify.