(We divide 4 sections for each sword as Saijyo saku, Jyojyo saku, Jyo saku and regular saku)
This Sadatsugu belongs to regular saku ranking.
The blade was polished.
Blade length : 44.8 cm or 17.63 inches.
Sori : 0.8 cm or 0.31 inches.
Mekugi : 1
Width at the hamachi : 3.01 cm or 1.18 inches.
Width at the Kissaki : 2.32 cm or 0.91 inches.
Kasane : 0.68 cm or 0.26 inches.
Era : Edo period Kanei era.
Shape : The blade is wide and thick with small sori and longer kissaki which looks like Kanei style.
Jitetsu : Itame hada well grained with flow of masa pattern seen.
Hamon : Nie Deki Gunome Midare mixed with nice Ashi activities. Boshi is round end.
Special feature : Echizen Kuni Shimosaka Sadatsugu was working at Echizen province Keicyo era to Kanei era.
Probably he was a student of the Yasutsugu, so his blades looks like Echizen Yasutsugu.
his blades are a lot of something similar to Higo Daijiyo Sadakuni for a style.
NBTHK Hozon paper
Aoi Art estimation paper : whole Oshigata.