Shibuichi kozuka signed "Joi", unfortunately the signature does not match confirm examples of Nara Sansaku "Joi" so it has to be considered a gimei.
It is still worth to appreciate the quality of carvings of the faces. Inlay is made of two separate colour gold alloys. I think it is really a nice item considering a price.
Made in edo period.
Size: 93 mm x 14 mm x 4 mm