Czechoslovakia pottery

My Czechoslovakian made Native American Chief. An inherited piece which I cherish. Flat backed I assume for the mantlepiece. Number 14152 stamp impressed on base along with an impressed other mark hard to describe - a sort of squashed or ovoid B or even 8 for want of better description - which is just above stamp of 'Made in Czechoslovakia'. White clay and I would say completely hand painted. About 18cms to the tallest point. The colour has proved difficult to capture properly and the colour is slightly darker than it appears in the front face photo below - his face is actually appreciably darker in tone than his clothing!