Made for Kyoto-based incense maker Kosaido, these are porcelain ceramic holders.
These are in the style of the Heian-era amusement of 'kai-awase', (matching shells).
The outer design features 'chōjū-giga' style imagery, some times described as the first manga.
Size: 8cm x 6.5cm, 4cm Height.
Care: Can be washed with warm water to remove incense ash.