Here is an example of a paper by Mitsumasa (Goto Teijo, the 9th) attributing gold double shishi menuki to Goto Sojo (the 2nd). Not from the Met collection, but the sort of thing to be found inside those wrappers in the unboxing post below…
Thanks to Markus Sesko, the Metropolitan Museum of Art and The New York Token Kai, a group of fifty or so sword students were invited to a lecture and viewing at the museum on the swords of Echizen Yasutsugu and the Shimosaka school.
Visitors to the Japanese arms gallery at the Met will be familiar with the Mito Tokugawa collection of Goto kodogu on permanent display. There are mitokoromono from each of the first 15 mainline generations along with additional kozuka and menuki. (Ex. coll. Robert H. Rucker, NY, Rogers Fund, 1945).
Seldom (never?) seen on display are the lacquer boxes that originally housed the collection. Markus retrieved these from deep storage and brought them out for study along with the above mentioned swords.
See also from Markus Sesko:
Further details on the attribution of the various items and some photos can be found by searching on “Goto” at the Met Museum site: