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Tokyo Nihonto

Naminohira Sadaku Katana

Naminohira Sadaku Katana

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Specifications :
  • Mei (Signature): 波平貞偶 (Naminohira Sadaku)
  • Type: Katana
  • Period : late Muromachi
  • With BO-HI
  • Blade Length: 63.4 cm
  • Curvature (Sori): 0.9 cm
  • Width at the Kissaki: 39mm
  • Motohaba (Width at the base): 28.5mm
  • Motokasane (Thickness at the base): 7mm
  • Blade's Total Length: 81.4 cm
  • Total Sheath (Saya) Length: 89.5 cm
  • Blade Weight: 531g
  • Total Weight (including sheath): 872g


The blade presents a signature of Naminohira Sadaku. The ji-hada (texture of the blade's surface) displays a beautifully crafted masame-hada, which resembles straight grain patterns. The steel's texture (jigane) has a refined quality, demonstrating a well-forged luminous foundation.

The hamon (temper pattern) reveals a straight pattern (suguha) with a shallow wave (notare), which is subtly interspersed with small irregularities (ko-midare). The boshi (temper line in the tip or kissaki area) appears to be in a swept manner (hakikake) with a slight turn-back.

The nakago (tang) appears to be polished (mune is polished), with three mekugi-ana (peg holes). The yasurime (file marks on the tang) are in a slanting pattern, known as sujikai.

The blade seems to be in an old polish but is still in a condition appreciable for collectors. The sword comes with a white saya (sheath), which bears an inscription, likely referring to its attribution to the Eisho era during the late Muromachi period.

Historical Context:

The Naminohira school, originating from the Satsuma province, has a history that spans several centuries. While not as renowned as the major sword-making traditions like Bizen or Soshu, the Naminohira smiths produced a significant number of quality swords, especially during the Kamakura and Muromachi periods.

Naminohira Sadaku would have been one of the smiths from this school, producing blades during the tumultuous late Muromachi period, a time of significant warfare and social upheaval in Japan. The period is marked by the rise of powerful daimyo (feudal lords) who would later set the stage for the unification of Japan.

Owning a sword from this era, especially one in good condition, provides a tangible link to a time when samurai values and martial skills were of paramount importance in Japanese society.

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You can pay by Bank card or Bank transfer. If you wish to use bank transfer please contact us using the form bellow with the name of the sword you are willing to buy.

Customs and Taxes

・Import duties, taxes and charges are not included in the item price or shipping charges. These charges are the buyer’s responsibility.
・Please check with your country’s customs office to determine what these additional costs will be prior to bidding/buying.
・These charges are normally collected by the delivering freight (shipping) company or when you pick the item up - do not confuse them for additional shipping charges.

Shipping and Return

  • Swords are shipped from Tokyo, Japan. We manage all the procedures to export the sword.
  • You can't return sword to Japan because procedures are too strict.
  • We work with a shipping company that have experience with Nihonto so you don't have to worry.
  • Please check the rules of your country before importing the sword. We do not take any responsibility, including (not limited to) refund, due to the above reasons.

Export Procedure (We manage it)

・All our swords are registered in the Agency for Cultural Affairs as artwork and The Board of Education(Cultural properties protection Committee); therefore each sword has the registration card, issued by the Board of Education.
・After receiving the full payment of the items,we return the registration card and get the permission from Ministry of Cultural Affairs to export the swords legally from Japan. It will take about 20 business days to do this procedure.
・After the receiving the permission, we will inform you by email and send the items immediately.

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