Ivory netsuke depicting the sword god Takemikazuchi subduing the giant fish Namazu.

This struggle is a fairly rare iconographic representation in netsuke sculptures, but is common in Japanese prints, particularly during the Edo period in namazu-e (or catfish images).
The god Takemikazuchi is depicted trying to subdue the giant catfish that lives in the kaname-ishi (the mythological bowels of Japan) and causes the country's recurring earthquakes.

Japan, 19th century.

Note that the end of the divinity's right foot has been glued back together.
Also note the beautiful, light patina of use on the latter, particularly visible on the nose and hands.

Dimensions:
Height: 2.8 cm
Depth: 2.2 cm
Width: 3.7 cm
Weight: 19 g