woodblock print by <a href="https://en.wikipedia.org/wiki/Kunisada" class="extiw" title="w:Kunisada">Utagawa Kunisada I</a>, signed ’Gototei Kunisada ga’, series ’Mirrors of the modern boudoir’, title ’Tooth blackening’, publisher Azumaya Daisuke
<bdi><a href="https://en.wikipedia.org/wiki/en:Kunisada" class="extiw" title="w:en:Kunisada"><span title="ukiyo-e artist">Utagawa Kunisada</span></a>
</bdi>
circa 1823 <div style="display: none;">date QS:P571,+1823-00-00T00:00:00Z/9,P1480,Q5727902</div>
<a rel="nofollow" class="external text" href="https://www.britishmuseum.org/collection/object/A_1915-0823-0-876">British Museum</a>