Previous answer is
Bisyu Osafune Norimitsu Gold Zogan (Tenwa 3 3 Gatsu 19 HI 3 tsu Dou Otoshi)
Gold Zogan (Tenna Gen 8 Gatsu Tsuri Dou Otoshi)Kansei 6 Nen 8 Gatsuhi
Special feature : The founder of the Bisyu Osafune Norimitsu is late Kamakura period and continued to late Muroamchi period.
This sword belonged to around 4th generation Gorozaemon Norimitsu.
Kinzogan Tenwa 3 3 Gatsu 19 HI 3 tsu Dou Otoshi and (Tenna Gen 8 Gatsu Tsuri Dou Otoshi)Kansei 6 Nen 8 Gatsuhi are precious.
Generally We can see sometimes Shito and Shinshinto Tameshigiri but Koto tameshigirri is few.
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Appraisal Quiz #237 (March 29, 2013)
Who made this sword do you think ?
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Hints. ※The picture will be enlarged
Blade length : 38.78 cm or 15.26 inches.
Sori : 0.60 cm or 0.23 inches.
Mekugi : 1
Width at the hamachi : 3.07 cm or 1.20 inches.
Kasane : 0.58 cm or 0.22 inches.
Era : Early Edo period.
Shape : The blade is wide and thick healthy Hirauchi style sunnobi Tanto.
Jitetsu :Koitame had well grained with jinie attach and chikei work and blackish jigane.
From Hamachi area, Mizukage utsuri appear.
Hamon : Niedeki small noter gunome midair and some parts are square shape.
Monouchi area, wide hamon nie strong with kinsuji sunagashi and also yubashiri irk china.
Boshi:Niedeki suguha base saki togari hamon round shape hakikake style.
Horimono:both sides of the blade sanko tusk Ken, on the back, bonji tsume and Gomabashi marudome style.
Hints.
1:The blade is rather wide with deeper sori long kissaki.
2:Jigane is koitame had well grained nice marvelous jigane.
3:Hamon is not reached to the edge at the Hamachi area.
Generally this school's sword makers are same as this sword.
4:Sword has signature on the back side(urea) and in case of Wakizashi,the signature is on the front.
5:The signature was changed 3 times during his sword making.
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