Shinobigatana 忍刀, Ninja Sword ,Yamatonokami Kanenobu 大和守兼信 signed, Early Edo

The swords that were said to be favored by ninjas are called Shinobigatana(忍刀).
They are around 60cm long and are characterized by a straight blade with very little curve.

The Shirasaya is tight and it is a little hard to insert and remove the blade.

Signature : Yamatonokami Minamoto Kanenobu saku
Nagasa : 575mm (22.64 in.) 
Sori : 5mm (0.20 in.) 
Total length : 860mm (33.86 in.) 
Motohaba : 29.5mm (1.16 in.) 
Sakihaba : 20.6mm (0.81 in.) 
Motokasane : 6.2mm (0.24 in.) 
Sakikasane : 4mm (0.16 in.) 
Blade Weight : 509g
Total Weight : 815g