Antique Japanese Katana Sword signed Iwagami Sadahiro

• Signature (Mei):  "Iwagami" Sadahiro Saku
• Period / Province: Estimated to be Shōwa era 
• Mounting: Complete koshirae – spiral lacquer saya (black & silver), iron mokkō-gata tsuba, black silk tsukamaki over white samegawa, floral menuki, gilt fuchi-gashira, green sageo
• Blade Length (Nagasa): 67.1 cm
• Curvature (Sori): 0.8 cm
• Mekugi-ana: 1
• Shape: Shinogi-zukuri with bo-hi
• Hamon: Gentle notare to gunome with fine nioi-based activity
• Jihada: Well-forged itame showing refined surface texture
• Kissaki: Chū-kissaki
• Polish: Bright modern Japanese polish revealing clear hamon and hada

A refined gendaitō katana signed Iwagami Sadahiro. This blade embodies the high standards of postwar Japanese swordsmithing, forged in accordance with traditional techniques using tamahagane steel and water quenching.

Measuring 67.1 cm with a gentle 0.8 cm sori, the sword presents a balanced and elegant profile. The shinogi-zukuri construction with bo-hi enhances both its aesthetic line and handling ease, making it light yet firm in hand. The hamon is a graceful notare to gunome pattern, revealing soft undulations and a delicate nioi-guchi. Under careful light, the surface shows a subtle itame jihada typical of well-forged gendaitō.

The sword is accompanied by a full koshirae of remarkable aesthetic appeal: the saya features an elegant spiral lacquer pattern in alternating black and silver tones, tied with a green sageo. The tsuba is a rustic mokkō-gata form in iron, paired with fuchi-gashira decorated in gilt floral motifs and menuki of matching theme. The tsuka is wrapped in tight black silk ito over white samegawa, combining understated sophistication with functional strength.

This sword captures the dedication and craftsmanship of regional swordsmiths of the Shōwa period, blending traditional forging with modern artistry. For collectors seeking an authentic, legally registered Japanese sword with complete and tasteful mountings, this piece by Iwagami Sadahiro represents both cultural heritage and aesthetic refinement.