An Aikuchi designed Tanto of 7 3/4 inches the Yomeiri Tanto was a Japanese custom of welcoming a Bride into the family by presenting her with a gift of a Tanto for self protection.
This type of Tanto can be worn placed with Koshirae in the Obi or with Shirasaya concealed in the Kimono sleeve.
Bizen Yokoyama Souzaimon Sukesada designed this Aikuchi Tanto to pierce armour. It is very thick. His works are rare and difficult to acquire. Tanto were seldom produced in the Shinto period.
Because of the date engraved on the Nakago, it is an excellent research item, the lobster designed Koshirae is a fine work of art. NBTHK Hozon with NTHK Shoshin papers.