Steve Sly Japanese Works of Art has dated this piece to the 19th Century.

Literature :
It is evident that the signature and inscriptions on Meiji Period tsubas and indeed many sword fittings of this type bore dedications to the early famous schools of metalworkers, in this instance the Somin school founded in 1670 by Somin I and continued through to Somin IV ( born 1795) in my opinion this tsuba was manufactured in the latter part of the 19th century and is Meiji Period.
For a similar recorded tsuba with the same inscription and date attribution see : https://www.bonhams.

Provenance :
The tsuba comes direct from a European collection.
Condition report :
Lovely original condition with age related wear.
Approximate Sizes :
Height : 3 1/2" 9 cm
Width : 3 1/8" 7.8 cm
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Steve Sly Japanese Works of Art has dated this piece to the 19th Century.
Specialists in japanese works of art from the meiji period 1868-1912
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