. . . . " represented to the public as kosher, unless the person includes on each sign and display advertisement in or about the person's premises in block letters at least 4 inches high the words kosher and nonkosher food prepared and sold here.(e) Hebrew symbols. -- (1) In this subsection, Hebrew symbol means: (i) Any Hebrew word or letter; or (ii) Any symbol, emblem, sign, insignia, or other mark th" .