Ancient Bourbon necklace ‘Concertino’ early ‘900 in 9 kt gold

Ancient necklace early ‘900 formerly called ‘Concertino’
In 9 carat gold
It has a large central pendant in perforated foil decorated with engravings, beads and small vitreous stones
Very rare Bourbon jewel in excellent storage conditions
Length :48 cm
Dimensions:9.5 x 5.8 cm
Weight:21.70 gr