Large vintage bookcase in lacquered fir, Italy 1920s

Bookcase in lacquered fir wood composed of 2 bases and 2 display cases joined by a frame.
The upper part is 234 x 34 cm, 163 cm high, and is equipped with 8 shelves of 100 x 19 cm with shelf supports that allow it to be moved using a ladder to the desired size. The glass doors are sliding.
The lower part is 234 x 42 cm, height 84 cm, and is composed of two fixed shelves of 32 x 19 cm in each base. The doors are sliding
The furniture can be dismantled into 5 pieces: 2 bases, 2 risers and a cornice.
The furniture is restored and left in patina, the shelf supports and the base shelves are new. The glass is original and blown. On the back there is part of an advertising poster.