Previous answer is
Osaka Ju Gassan Sadakatsu Kinsaku Kao
Showa 10th November lucky day. Sinno denka Goseitan kinen.
( anniversary of royal prince was born)

Special feature : Gassan Sadakatsu is a son of the first generation Sadakazu and learned
from his father. He was very skillful swordsmith, Gassan Ayasugihada, Bizenden,
Sosyu den and also Yamato Hosyo style.
From Meji 20th, he made swords for his father as his Daisaku.
From Taisyo era, He made swords by his own name Gassan Sadakatsu.
From Taisyo era, He made swords for Royal family, relatives,
and also army and navy high ranking officials. Gassan Sadakazu and Sadakatsu
and also later generation Gassan family use their own
Gassan Habaki. This blade is typical Ayasugi hada.

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Appraisal Quiz #273 (January 10th, 2014)
Who made this sword do you think ?
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Hints. ※The picture will be enlarged

Blade length : 68.7 cm or 27.04 inches.
Sori : 1.7 cm or 0.66 inches.
Mekugi : 2
Width at the hamachi :2.94 cm or 1.15 inches.
Width at the Kissaki : 2.04cm or 0.80 inches.
Kasane : 0.65 cm or 0.25 inches.
Shape : The blade is oosuriage mumei(cut shortened).
Regular size Katana with deep Sori. Kissaki is a little bit long.
On both side, there are Bohi.
Jitetsu :Itame hada and Mokume hada mix with Jinie and Chikei.
This Jigane looks like Matsukawa hada.
Hamon : Niedeki Gunome Midare and Oo-Gunome Midare.
Deep Nioikuchi. In Ha, there are many Sunagashi and long Kinsuji.

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