Hi Peter, in the varshavsky essay on Yoshiro tsuba, (11) fig. 25 his Schwertzierrate book, page 13 gives example of a Yoshiro/Naomasa Tsuba
http://varshavskycollection.com/yoshiro-tsuba/
Best
Iwasaki Shigeyoshi..
His father Dr. Iwasaki wrote the book: "Hamono no Mikata" (How to judge a sword)
https://www.Japan-tool.com/hamono/Iwasaki/Kamisori.html
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Hi Mark, please presume your wakizashi, may be you will also post pics...
Welcome on board and in this hard times it's nice to support the right auto company !!
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