KOTO Katana Muromachi period mumei, Iron Fittings Practical Koshirae

KATANA from the Muromachi period.
The Koshirae is simple, but the fittings use a lot of iron, giving it a practical style.
A very large Tsuba is attached.
The blade shows signs of fatigue, but this should be tolerated as it is estimated to be over 500 years old.
Suriage has been performed; it seems that it was originally a much larger sword, but it was trimmed to the optimal length for the era.
Interestingly, the Habaki is shaped like Mount Fuji.

Signature : Mumei (Unsigned)
Nagasa : 652mm (25.67 in.) 
Sori : 13mm (0.51 in.) 
Total length : 970mm (38.19 in.) 
Motohaba : 28.5mm (1.12 in.) 
Sakihaba : 19mm (0.75 in.) 
Motokasane : 5.6mm (0.22 in.) 
Sakikasane : 4.1mm (0.16 in.) 
Blade Weight : 550g
Total Weight : 1045g