Very old glass deer very rare collector's top item

Many of these beautiful glass animals are privately owned and are virtually non-existent.
This hollow deer, made in front of the flame, is estimated to date back to the thirties, or earlier. Since colored glass rods were very difficult to get and exorbitantly expensive, they helped themselves with top clear glass, which would then be poured out with a metal alloy from the inside at the end. This procedure was also used for the Christmas tree balls.
However, over time, this metal paint dissolves in the air and becomes dust. However, leave it in the body if possible and DO NOT rinse it out. It loses its patina and charm as well as its unmistakable appearance.
By the way, this also recognizes the old pieces.
This deer is intact and intact.
It is 10.0 cm long and from the tip of the foot to the end of the antlers also 10.0 cm high.
A great object for collectors.