Although the current mihashira-torii is the one which was constructed in 1831 after the original one, the one depicted in 'Sansai-torii' which is the 11th volume of 'Hokusai Manga' (a collection of Hokusai KATSUSHIKA's sketches) is made of wood.
現在のものは1831年に再建されたものだが、「北斎漫画」十一集「三才鳥居」に描かれているものは木造となっている。