Wall shelf unit - Elm - Elm and burr bookcase

This elm root wood bookcase is probably made by Willy Rizzo in the 20th century. However, it has neither a label nor a brand.
It is in a condition that allows it to be used, but it requires restoration, as can be seen from the detailed photos.

It is composed of 3 interconnected elements, so it is a single block that cannot be separated.
There is also a back wall, which we did not use.
At the bottom there are 3 small cabinets with a central shelf; the central cabinet also has 2 drawers. The left and right cabinets originally had a plastic tray (dark transparent plastic), which we did not insert, but which is present and intact.
The doors are equipped with metal hinges and the lower guides are also metal; one guide has completely detached, while the other is loose.

Dimensions:
Height 2.5 m
Width 3.17 m
Depth 43 cm
Weight: 225 kg (estimated)

Please pick up the goods.