A FINE RED OVERLAY 'SNOWSTORM' GLASS BOTTLE

A series of raised bosses, resembling nail-heads (ding) are often found on overlay glass bottles. They sometimes function as something recognizable, such as bubbles arising from turbulent waves, but their main role seems to be to imply certainty (yiding) in whatever is wished for. In this case, the wish is for longevity, as suggested by the long, sinuous bodies of the dragons.