Mei (signature) : Kankei Masazui
Length : 9.69cm x 1.52 cm ( 3.81 inches x 0.59 inches)
Jidai(era) : Edo period.
Special feature : On the iron plate, Nio-sama(Nio guardian deity）is engraved.
This god is well known as to protect from disaster of the family and house and so on.
AOI estimation paper
In Kiri box.