Sozen the third was given a bronze seal of '宗全' (Sozen) when he received the order from Enshu KOBORI, and the family put that Sozen seal on their works until the ninth generation.
小堀遠州の用命を受けた際に「宗全」の銅印をもらったことから、以後九代まで作品に宗全印を捺用した。