Posted By: I.Nagy Tue, May 05, 2020
現尚 - Genshō
神爽 - Shinsō - Spirit of refreshing
Inscriptions on the mounting,
Written by Oinaga Genshō Former Great-priest of Kurodani School*
(*Kurodani is a school (moovement) belonging to the Jōdō (Pure Land) sect of Japanese Buddhism, with many temples all over Japan)
紫霊好請鑑 - Found good by Shirei
Unfortunately the calligraphy is without dating.
I couldn't find the above priest's name neither in my name dictionaries nor on the net, I think it is from the 17-18 century.