『日本の国宝』(Nihon no Kokuhō) consists of 111 volumes total, comprising 11 bound volumes plus 1 index volume.
Notes on verification
Confirmed via NDL Research Navi description and cross-corroborated by CiNii serial records and multiple bookseller listings, all consistently stating 111 total volumes (110 bound + 1 index).
Sources
- 美術作品（日本）の図版を探す | Research Navi (ndlsearch.ndl.go.jp)
- https://ci.nii.ac.jp/ncid/AN10589747 (ci.nii.ac.jp)
- https://www.kosho.or.jp/products/detail.php?product_id=117810739 (kosho.or.jp)
- https://www.amazon.co.jp/dp/B07MR5V5KB (amazon.co.jp)