Vintage moulded 'custard' glass animal, bird, butterfly, fish & people shaped beaded necklace, rare Czech pressed glass with UV sensitivity

Fabulous vintage Czech glass beaded necklace with unusual pressed 'custard' glass animal, people, fish and bird shaped beads. This type of glass has a sensitivity to UV/black light and glow as shown in some of the pictures. I don't know if they are a type of uranium glass or use some other reactive element like cadmium.

The beads are each painted with different, bright coloured enamel paint that gathers in the creases of the moulded glass. They are wired on silver and brass tone wires and jump rings. The jump ring that the clasp attaches to is stamped with 'Czechoslovakia' in tiny letters.

The necklace has a length of 16 inches and fastens with a secure spring ring clasp. It is in very good vintage condition.