Polishing is a permanent intervention.
It may be undertaken to address condition, or to clarify the blade's visible character where appropriate.

Before proceeding, condition and structural integrity are reviewed to determine suitability.

Estimated Cost

• Tantō: ¥150,000 – ¥300,000
• Wakizashi: ¥200,000 – ¥300,000
• Katana / Tachi: ¥350,000 – ¥400,000
  

Final cost depends on length, current state, and required scope of work.
A formal estimate is provided after inspection.

Estimated Timeframe

• Review response: approximately 1–2 weeks
  
• If undertaken: generally several months to one year, depending on condition and schedule
  

Polishing is not performed lightly.
When appropriate, it serves to reveal what is already present within the blade.

Koshirae are commissioned according to the client's preferences.They are not limited to strict period reproduction.
Fittings, motif, lacquer style, and aesthetic overall direction are discussed from multiple possible configurations.
Work is entrusted to specialized craftsmen.For accurate mounting, the blade must be entrusted for measurement and fitting,For purchased through this shop.

Estimated Cost

• Production: from ¥300,000
  
• Direction fee: 20% of total production cost
  

Total cost varies depending on fittings, materials, and lacquer work.
A formal estimate is issued prior to confirmation.

Estimated Timeframe

• Approximately 2 years from project confirmation

Each commission is developed individually, balancing intention and feasibility.

This consultation is designed to locate a blade based on clearly defined criteria.

Discussion includes:

• Period (Kamakura, Muromachi, Shintō, Shinshintō, Gendaitō)
  
• Budget range
  
• Length and proportions
  
• Classification (tachi, katana, wakizashi, tantō)
  
• School or tradition
  
• Individual smith (if applicable)
  
• Intended purpose
  

Based on these conditions, suitable candidates are sourced and presented.

Availability depends on rarity and prevailing market conditions.

Timeframe may range from several weeks to several months.

Acquisition price varies according to specification and market availability.

Final terms are confirmed prior to any purchase decision.

Discernment guides the process.

Authentication is pursued as one perspective among several.An evaluation issued by a third party represents an informed assessment within a defined framework.
It does not constitute absolute truth.No evaluating body can fully apprehend a blade in the way its maker once did.
Judgment is formed through comparison, precedent, and accumulated scholarship.

Submission may be appropriate for:

• Clarifying attribution where uncertainty remains
  
• Documenting assessment for future transfer
  
• Positioning the blade within an established evaluative context
  

Support is provided only for blades purchased through this shop.

Submission is limited to recognized independent bodies such as:

• NTHK

Submission to NBTHK is not routinely undertaken.

Estimated Costs

• Submission fee: approximately ¥20,000 – ¥30,000
  
• Handling and coordination: ¥30,000
  
• Shipping and insurance: charged at cost
  

Certification cannot be guaranteed.

Estimated Timeframe

• Dependent on the organization's schedule
  
• Typically several months
  

Evaluation is a reference, not a conclusion.