That's a very big and heavy kokeshi by artist Masae Fujikawa. It has beautiful white-red plum flowers painted on her 'Michiyuki' (a traditional coat to wear over a kimono when going out on the street). Plum is a early Spring flower in Japan.
'Doushin' means child's (pure) heart in Japanese. This might remind you of your childhood memory.
Height: approx 27 cm
Diameter foot: 9 cm
Weight: 1404 g.
Please look at the pictures carefully to assess the condition of the item.