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Masanari (正成)

Collection Record
School / Tradition—
Historical PeriodEdo Period
Typetanto · nihonto
Material—
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A masterclass in material harmony and historical storytelling. At its core rests a heavily patinated Edo-period blade, defined by a quiet suguha (straight) temper line and precise futasuji-hi (double grooves), forged and signed by the swordsmith Masanari (正成).

Provenance & History

Generations later, this historic steel was mounted in an extraordinarily rare, late Edo-era kibori (fully carved wood) koshirae. The continuous sculptural form of a dragon flows seamlessly from the gold-eyed tsuka down through the meticulously scaled saya.

Full Description

Masanari (正成) A Convergence of Steel and Myth A masterclass in material harmony and historical storytelling. At its core rests a heavily patinated Edo-period blade, defined by a quiet suguha (straight) temper line and precise futasuji-hi (double grooves), forged and signed by the swordsmith Masanari (正成). Generations later, this historic steel was mounted in an extraordinarily rare, late Edo-era kibori (fully carved wood) koshirae. The continuous sculptural form of a dragon flows seamlessly from the gold-eyed tsuka down through the meticulously scaled saya. The structural restraint of the mounting is striking. The kinetic energy of the deeply textured wood is anchored entirely by solid silver: a structural pin, a habaki intricately chased with celestial clouds, and flawlessly smooth junction fittings. This unadorned silver acts as ma (negative space), providing a necessary visual pause that elevates the surrounding detail without overwhelming the eye.

Detail Gallery
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Masanari

正成
SchoolUnknown
PeriodEdo Period
ProvinceUnknown
Generationnull

Masanari (正成) is an obscure artisan of the Edo period whose specific school affiliation, provincial residence, and artistic lineage remain undocumented in primary historical registries such as the *Nihonto Meikan*. While the name appears in the broader annals of Japanese craftsmanship, the lack of extant, authenticated works prevents a definitive analysis of his stylistic hallmarks, preferred motifs, or technical idiosyncrasies. He is regarded by scholars and serious collectors as a "lost" craftsman of the Pax Tokugawa, representing the many skilled individuals whose names survive in records but whose specific artistic voices have been silenced by time. This Masanari should not be confused with the celebrated lacquer artist Shiomi Masanari (塩見政誠), as the smith or metalworker in question lacks the documented pedigree and surviving corpus associated with such established Edo-period masters [7], [10].