Steve Sly Japanese Works of Art has dated this piece to the 1870s.

Literature:
The mounts although unsigned can possibly be attributed to an artist working in the mid 19th century by the name of Ishiguro Masatsune III.

For an almost identical example signed by this artist see :Dr Nasser. D. Khalili , Treasures of Imperial Japan , Metalwork II Plate - 161.
Condition report :
Superb condition throughout
Approximate Sizes :
Length Overall : 16" 40.5 cm
Length of blade : 10" 25.5 cm (inc habaki)
Free worldwide delivery and a certificate of authenticity are included in the price of this item. ep66
Steve Sly Japanese Works of Art has dated this piece to the 1870s.
Specialists in japanese works of art from the meiji period 1868-1912
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