Smiling Man on Frog, Liu Hai?

Smiling Man on Frog, Liu Hai? Daoist God of Prosperity on 4-legged Frog (usually 3-legged Toad), Arms and chain with coins are missing.
On the back an attachment is missing as well.
very old, Japanese? patinated Bronze, height ca. 18.9 cm, width ca. 6.8 cm, depth ca. 12 cm, weight ca. 861 g