As the Emperor inherits three sacred imperial treasures and Crown Prince does Tsubokiri no Mitsurugi (the sword Tsubokiri) from one generation to the next, there is the treasure of the clan that each toshi choja inherits from generation to generation.
歴代天皇が継承する三種の神器、歴代東宮が継承する壺切御剣のように、代々の藤氏長者が受け継ぐ伝家の宝器がある。