Shibuichi fuchikashira signed "Hamano Naoyoshi" with NBTHK Hozon Tosogu. I am afraid I do not know anything about this maker.
Made of polished ground shibuichi with gold and shakudo iroe.
Decorated with Hotei with children.
Made in late edo period.
Size:
Fuchi: 37 mm x 22 mm x 15 mm
Kashira: 31 mm x 17 mm
In custom made kiri box.