It depicts not buddha but a Chinese Zen-master, called Poe-Tai-Ho-Sang.
He lived in China somewhere between 6th and 10th century, happily, most of the time surrounded by children.
As he found buddha within, after his death was revered as a popular hero and god of happiness.
His likeness is nowadays known over the whole world as the smiling or potbellied buddha, bringer of wealth and happiness.
This Buddha holds pearls in his hands, symbol of knowlegde and wisdom.
Measurements: 7 x 4 cm