Although these were designated as excellent goods of the old Seto during the Kamakura period, scientific investigations revealed that they were in fact modern pieces of work (refer to the section 'Einin no Tsubo Scandal').
これらは鎌倉時代の古瀬戸の優品として指定されたが、科学的調査の結果、現代の作品であることが判明したもの（別項「永仁の壺事件」を参照）。