Do you own an authentic Japanese Koshirae that you are considering selling?
Supein Nihonto buys antique Japanese sword mountings directly from private collectors, families, estates and dealers worldwide.
We are interested in complete Koshirae, partial mountings, mounted swords, fittings preserved together as a set, certified examples and complete collections.
If you are unsure about the period, school, originality or value of your koshirae, send us clear photographs and we can assess it.
Some Koshirae contain fittings that were deliberately created as a coordinated group.
These may share:
The same subject
Maker
School
Materials
Decorative techniques
Patination
Artistic style
A coordinated set can have greater historical and collector interest than fittings assembled from unrelated pieces.
If the fittings appear to match, please keep them together.
What photographs should i send?
Please send:
Full view of the complete Koshirae,
both sides,
tsuka,
tsuba,
fuchi,
kashira,
menuki,
saya,
kojiri,
kurigata,
koiguchi,
kozuka or kogai, if present,
any signatures or inscriptions,
blade, if present
shirasaya, if present
storage box,
NBTHK or NTHK papers,
provenance documentation.
Detailed photographs are especially useful when several fittings are present.
Japanese sword mountings were sometimes modified, remounted or assembled from components of different periods.
Later restorations and replacement fittings also exist.
Send us clear photographs of the complete mounting and its individual components.
We can determine whether the piece is relevant to our area of specialisation.
Sell your Koshirae
If you own an antique Japanese Koshirae, a mounted sword, a partial mounting or a complete collection that you are considering selling, send us photographs for an initial specialist assessment.
Complete mountings, partial koshirae, inherited pieces and collections are welcome.
What our customers say
SupeinNihonto was born from years of dedication to traditional Japanese martial arts such as Aikido, Kendo, and Iaido, and a deep passion for collecting authentic samurai weapons and armor.
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Great atention from the stuff, all the question was nicelly answered and the armor was very decorative and real gorgeous piece of art. Very happy with everything! Many thanks Supein nihonto!
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Erika L
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Compré una armadura Gusoku y todo muy bien, tenía algunas preguntas y Eric ha sido capaz de contestar todo lo que no sabía, llegó todo muy bien embalado y bastante rápido. El Kabuto es muy bonito y está muy bien conservado.
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Eric T
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J'ai pu échanger de visu avec Eric. C'est un vrai passionné, qui maîtrise son sujet. Je le recommande vivement, surtout dans ce milieu ou le meilleur se mélange avec les pires escrocs
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Daniel L
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Hervorragende Dienstleistung, Qualität und persönliche Betreuung! Ich habe bereits drei Stücke von Supein Nihonto gekauft und hatte nie Probleme. Nach schlechten Erfahrungen mit anderen japanischen Händlern – lange Lieferzeiten und sogar ein verlorenes Paket – bin ich zu dieser Firma gewechselt. Ich werde ihnen treu bleiben und meine bereits beeindruckende Sammlung weiter ausbauen.
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Mik B
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Ho acquistato da Eric un’armatura samurai di grande fascino e qualità, e l’esperienza è stata eccellente sotto ogni aspetto.
Fin dal primo contatto si è dimostrato estremamente professionale, competente e disponibile nel fornire tutte le informazioni richieste, accompagnandomi con trasparenza durante l’intero processo di acquisto. L’oggetto ricevuto corrisponde perfettamente alla descrizione e alle aspettative, con una cura nei dettagli che testimonia una profonda conoscenza del settore.
Ho particolarmente apprezzato la serietà, la correttezza commerciale e l’attenzione riservata al cliente, qualità oggi sempre più rare da trovare. La spedizione è stata accurata e l’armatura è arrivata in perfette condizioni.
Consiglio vivamente Eric a collezionisti, appassionati di arte e cultura giapponese e a chiunque sia alla ricerca di oggetti autentici e di alto livello.
Grazie ancora per questa splendida acquisizione che rappresenta uno dei pezzi più interessanti della mia collezione.
Mik – Roma, Italia
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Emanuele S
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I had an excellent experience with Supein Nihoto. I purchased a katana and a wakizashi, and both pieces are truly beautiful — carefully selected and of remarkable quality. You can immediately see the attention to detail and the seller’s passion for what he offers.
The packaging was also exceptional: all the documentation was perfectly arranged in a refined envelope, which added a very elegant touch to the whole experience.
As a thoughtful gesture, he even included a small katana kake stand as a gift, which I greatly appreciated.
Beyond the objects themselves, the seller was very helpful, responsive, and clearly knowledgeable. His selection is outstanding, and you can tell he deals in genuinely fine items.
Highly recommended — I would definitely purchase from Supein Nihoto again
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Dimitrios K
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Legit dealer of Japanese treasures ! This man loves his work is not just reselling items, at first he is a collector and does this out of true passion.
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Burke J
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I received a beautiful tokubetsu hozon nihonto for Christmas from Supein. Actually my wife purchased the sword after receiving some helpful hints and recommendations lol. She knows absolutely nothing about nihonto but Supein walked her through everything honestly and I ended up with something beyond my dreams and expectations, honestly. The packing was exceptional, shipping fast and the sword itself a literal work of art. Supein has a lifetime customer now as my collection grows. Thank you!
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