Painted Glass Egg / Liqueur Server

Recently acquired from an estate sale. Dated to at least 1940, not sure how far before then. The object is a large painted glass egg that opens up into a liqueur server involving a decanter and six shot glasses. The only mark on there is an indentation that says Czecho-Slovak. It measures 10" tall by 6.5" across at the center. The egg is glass and painted from the inside.