Posted by Alec W. (220.127.116.11) on June 13, 2020 at 19:49:08:
In Reply to: Artist identity posted by Chris Brooks on June 13, 2020 at 19:13:14:
It's "Shinsai" 進斎, the artist more commonly known as Toshimitsu 年参.
As it happens, I used a signature from this very design in my database -- there is an impression at Waseda University Library:
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