BANGBANGSAN

That mark looks like the Tokokawa arsenal's Rocking Star mark on the Navy Type 30 bayonet.

空一七六

Hand forged by 堀井俊秀 （Horii Toshihide）'s son 堀井胤次（Horii Tanetsugu）

John Check these 三笠刀 Mikasa-tō (Gun material use of a battleship "Mikasa.") The Mikasa swords were forged 229. The grade Kō Mikasa dirks (It is with "the fate of a Japanese Empire is decided by this battle" sculpture were forged 973, and the grade Otsu Mikasa dirks were forged 451. And it was sold through "Suikōsha".These swords and dirks were made by one of the top 12 Shows swordsmiths 堀井俊秀 （Horii Toshihide） also known as 秀明（Hideaki）&兼明（Kaneaki）。 http://ohmura-study.net/912.html

#八七

The Nagoya city emblem, resolved in the city council's October 1907 (Meiji 40) meeting, originates from the "〇に八の字"（ Maruhachi） used as a joint seal by the Owari Tokugawa family. In the history of the Nagoya city council, it is explained that the circular emblem symbolizes boundless and harmonious expansion, with the inner "八" representing a supporting and expanding form, signifying growth through accumulated years. Additionally, the "八" is likened to the earth's feminine principle, signifying growth and progress, akin to the path of supporting a load, as well as raising sails with favorable winds. This emblem signifies Nagoya's continuous and peaceful development, poised for expansion, and in alignment with the winds of progress.

Maybe the Nagoya City emblem？

天照山鍛鍊場=Tenshōzan Forge 鐮倉=Kamakura

I have several swords with this mark in my files. I think the "カ" might be an abbreviation for "Kamakura," which is where the "天照山鍛鍊場" was located.

I couldn't found any other pictures of this sword, but from what I remember, it's in souvenir fittings。

It was in regular Type 98 mount, but the sword was restored in Japan, it also has a custom-made shirasaya. Here is the OP

Bizen kuni oite Ujo ka ichihara nagamitsu saku kore

Not my sword, but this one has even longer Mei-備前國於烏城下市原一龍子長光作 / 昭和十九年十月吉日

Bruce I'm not sure, maybe Kaneritsu? Interestingly, the Chinese pronunciations for 利 (li), 力 (li), and 立 (li) are all 'Li'

Bruce It's a 1945 Mumei Mantetsu,い一六一五。

I don't know if it was in Kai Gunto fitting, that's the only photo I saw. I think 兼波 works in 伊奈波鍛鍊場， like other smiths-兼利&兼立.

On FB,only this photo.

@Bruce Pennington 伊奈波 兼波之（作）

I’m with Steve,酒 for 酒井 or some other name with 酒。

#812 is the right choice!

It's not real Kanji or Hanzi 禾X尺共（Half)建國

A few more tankers

The Tanker carries Type 32 as well.

Cool, please post some photos of the scabbard as well. thank you!

@Bruce Pennington @george trotter Here is the List of Seki Swordsmiths for Military Swords (Showa-to) During the Showa War Era, Including the Reported and Investigated List Until October of Showa 14, and the Subsequent Newly Reported Swordsmiths List. It also marked the time when each swordsmith became an RJT. http://www.touken-kasugado.com/faq_2.html