| Product No. KA-0818 無銘（島田） | |
|---|---|
| Mei |
Mumei（attributed to Shimada） Back: -- |
| Shape | Forged in shinogi-zukuri with an iori-mune, the blade has a slightly small kissaki and displays a pronounced difference between the motohaba and sakihaba. Its dignified silhouette is enhanced by a graceful koshizori-style curvature |
| Region | Suruga Province |
| Era | Late Muromachi Period |
| Length |
74.2 cm 29.2 in |
| Sori (curvature) |
2.4 cm 0.9 in |
| Motohaba |
3.2 cm 1.2 in |
| Sakihaba |
1.9 cm 0.7 in |
| Munekasane |
0.7 cm 0.3 in |
| Status | Hozon Token |
| Certification Date | December 01, 2025 |
| Registration Authority | Osaka |
| Registration Date | June 08, 1951 |
| Jihada (Metal pattern) | Ko-itame hada mixed with flowing grain, covered with ji-nie |
| Hamon (Temper line) | The hamon displays a dynamic ō-midare with a hitatsura-like character in the lower half, while the upper half is composed of notare mixed with gunome |
| Bōshi (Point / Tip) | The bōshi approaches an ichimai-bōshi and is accompanied by muneyaki extending along the mune |
| Nakago (Tang) | The nakago is ubu mumei, with the original signature and yasurime no longer discernible. The nakago-jiri is ha-agari kurijiri |
| Mekugiana (Rivet holes) | 1 |
| Habaki | Double habaki, gold-foiled on a silver base, with full yasurime |
| Mountings | Koshirae-tsuki |
| Koshirae | Uchigatana Koshirae with a Brown Uruoi-nuri Saya |
| Koshirae Length |
103.5 cm 40.7 in |
| Tsuka Length |
23.5 cm 9.3 in |
| Tsuba | Pine Tree Openwork Above and Below, Polished Shakudō Ground, and Odawara Fukurin |
| Menuki | Plovers over Waves, katachibori with gold iroe on a shakudō ground |
| Fuchigashira | Old Pine Tree beneath the Moon, Signed: Kōno Yoshikuni, aged 61, with kaō, takabori with gold iroe on a shibuichi ground |
| Other details | Tsuka covered with white samegawa, wrapped in black tsumami-maki |
Price |
650,000 JPY |
| Although ubu and unsigned, with the original signature lost to corrosion, this sword has been attributed to the Shimada school, represented by such smiths as Yoshisuke and Sukemune. The jihada is a flowing ko-itame, while the hamon displays a vigorous ō-midare with a hitatsura-like appearance in the lower half, becoming a more restrained notare-midare in the upper half. The bōshi approaches an ichimai style. These features support the attribution to the Shimada school, a group of smiths working in the Bizen tradition. Particularly intriguing is the registration certificate issued in Osaka in 1951, often referred to as an “early daimyō registration,” which records the blade as “Signature Unknown (possibly Hatakeda Morichika).” This historical notation adds further interest to the sword. The blade is accompanied by an uchigatana koshirae with a brown urumi-nuri lacquered saya. Passed NBTHK Hozon Token shinsa in 2025. |
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