C321, Ko Mino fuchi kashira, Inside dimensions of the fuchi are 1.7 x 3.2 x .8 cm high. This is consigned and here is the owner’s description.

Ko-Mino 古美濃 Fuchi-Kashira (NBTHK Tokubetsu Hozon) – late Muromachi

The fuchi is made of silver and shakudo, the kashira is shakudo. Both portray very fine old nanako with nice takabori. Theme is chrysanthemums and ho-o birds which are accentuated by gold and silver iroe – comes in a custom fitted box with pillow. Fuchi 37mm x 21mm x 8mm. Kashira 34mm x 16mm x 5mm.

Condition is excellent, of course. Wonderful set. Was $1,090, now $875.