Japanese Signed 16th Century Blade Attributed to Nobuyoshi (1532-1555)

This remarkable signed Japanese sword bridges two pivotal eras in Japan’s history, forged during the tumultuous Sengoku period (Warring States era) of the 1500s and remounted centuries later for service in World War II. The blade is traditionally forged and shows the hallmarks of master craftsmanship: a well-defined shinogi-zukuri profile, a long bohi (fuller) groove, and a visible temper line (hamon), all contributing to an elegant and functional form that reflects the martial artistry of its time.

Upon careful disassembly of the WWII-era officer’s sword, we discovered a handwritten paper tucked into the hilt reading: “Nobuyoshi 1532–1555”, offering a compelling attribution to a swordsmith active during that period. The tang (nakago) bears a signed mei, partially obscured but visible enough to support further study. The blade is in immaculate condition, retaining excellent geometry, edge integrity, and crisp features. While a little tiny bit loose, this sword is an ideal candidate for shinsa (Japanese sword authentication), and is ready to be papered by a recognized sword society with minor visibility maintenance on the mei.

During World War II, it was common for Japanese officers to carry ancestral blades into combat as a symbol of personal and national pride, blending the legacy of bushido with modern military service. This blade was remounted in wartime fittings and a steel scabbard, underscoring its journey from feudal battlefield to 20th-century conflict.

This is an exceptional and rare offering, a genuine 16th-century signed katana with historical attribution and strong papering potential. A true prize for collectors of nihonto, militaria, or Japanese history.

Specifications:

• Material: Steel Blade
• Origin: Japan
• Period: Forged Sengoku Period (16th Century); Remounted WW2 Era
• Dimensions: Blade length approx. 16" Inches; Total Length w/ Scabbard 36" Inches

Condition: 

Very Good/Fine – Shows light to moderate wear, may have minor imperfections. A very fine example of the collectible. Collector Quality.

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Item Location: JSC

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