17th-18th century  O-Tanto (long Tanto) by Mino Kanemoto.
ShinShinto O-Tanto in Koshirae mounts.
Signed: Mino Kanemoto
Sugata (form): Tsurugi    General shape: Hira-Zukuri
Sori (curvature: 0.26 inches, 0.66 cm  Tori-Zori (centre of blade)
Kissaki (point): O-Kissaki (long)     Mune (back): Iori Mune roof typical triangle
Nagasa (length) 4.1 inches, 10.4 cm
Kozuka (short knife): Shakudo with four Kiri (paulownia) mon in gold
Tsuba (sword guard): Shakudo with eight Kiri (paulownia) mon in gold
Note: An exceptional quality O-Tanto with high end all matching fittings brought to the United States by a high-ranking American officer serving in Japan, following the World War 11.