Previous answer is
Ou Noriyoshi Ju Koyama Munetsugu Saku/Tenpo 11 Nen 10 gatsu13 niche Oite Senjyu Tata Dotanbarai.
Special feature : Koyama Munetsugu was born at Shirakawa Kyowa 3rd year and called So-Bei and became a wordsmith of the Shirakawa Matsudaira daimyo family.
After that he moved to Edo and worked for Kuwana domein wordsmith.
He was well known sword maker in Edo period so he made a lot of swords during that days.
His reputation was very high because his skill is quite high and nothing rubbish sword left.
I have never seen worst one.
His subjects are overwhelmingly Gunome midair hamon and midarekomi boshi.
The sword are very similar with Cyounsai Tsunatoshi.
The differences of these swords are Tsunatoshi’ s gunome midare devided 2 and round boshi but Munetsugu is not devised and boshi is midarekomi style.
If the round shaped boshi, you should doubt the signature.
Munetsugu of brother Koyama Munehira, Munetoshi are almost same hamon and jigane.
He had to stop business making swords, by Haitorei.（decree banning the wearing of swords）
This sword was made at Tenpo era which iss the most powerful age for Munetsugu.
The saidanmei(Tameshigiri) is very precious.
Koshirae:
tuba:oval iron plain Tsuba.
fuchikashira:On the syakudo plate, autumn insects and flowers are engraved: Mino Goto school.
menuki:deer is engraved with gold color.
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Appraisal Quiz #248 (June 14th, 2013)
Who made this sword do you think ?
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Hints. ※The picture will be enlarged
Blade length : 70.6 cm or 27.79 inches.
Sori : 1.2 cm or 0.47 inches.
Mekugi : 1
Width at the hamachi : 3.30 cm or 1.29 inches.
Width at the Kissaki : 2.38 cm or 0.93 inches.
Kasane : 0.78 cm or 0.30 inches.
Shape : The blade is wide(Motohaba 3,3cm) and thick and long kissaki nice looking healthy blade.
Jitetsu :Koitame had well grayed with jinie attach and chikei work wonderful nice Jigane.
Hamon : Niedeki Cyuーsuguha(middle suguha) Notare hamon with thick nioikuchi and sinagashi ,kinsuji work.
Boshi is round shape with thick nioikuchi.
hints.
1:Middle suguha with deep nioikuchi hamon and noter hamon mix.
Boshi is deep nioikuchi rund shape.
2:Koitame had well grained with jinie attach thickly and chikei work.
3:At the Hamachi area, Hamon doesn’t touch Hamachi and disappear on the ji sharply.
4:Yasurime :please check the nakago picture.
5:The signature is Uramei. This swordl, Katana is cut Ura side and Wakizashi is Omote side.
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