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Kogai: NBTHK Hozon Paper : Mumei(Unsigned) attributed
Tsuba: Mumei attributed as Owari (NBTHK Tokubetsu Hozon paper)
Tsuba: Mumei attributed as Kyo Sukashi NBTHK Tokubetsu Hozon paper
Notification for NBTHK moving and Shinsa delay.
Notification for NBTHK Shinsa interrupted during May to September.