The brand, label, or mark required by section 325F.43 shall be the words “not Indian-made” and shall be placed or attached outside of and on a conspicuous part of the finished article so as to be plainly visible to the purchasing public, and shall be the size and style known as great primer Roman capitals. Such brand or mark, if the article will permit, shall be placed upon it, but when such branding or marking is impossible a label shall be used and attached thereto.