Antik Dragon Japanese & Other Fine Art has dated this piece to the 19th Century.
Raised on a flat ova base with a central himotohi hole. Unsigned. Measures 4.6 x 4.7 x 2cm.

Gentoku was a Chinese Emperor, and one of the Three Heroes of the Han Dynasty (together with Kan’u and Chohi). He is often depicted riding his horse (across a river) as he escapes from a castle besieged by his brother-in-law.
Lovely condition and patina.
Antik Dragon Japanese & Other Fine Art has dated this piece to the 19th Century.
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