Osvaldo Borsani Modular Rosewood Bookcase Wall Unit with Removable Panels

Large modular rosewood bookcase/wall unit by Osvaldo Borsani for Tecno (ca. 1960, Italy).
Composed of six gold aluminum uprights forming five bays/sections with the five original, removable panel backings in alternating ochre velvet and rosewood veneer (can be displayed with or without panels).
Includes
-four-drawer chest
-locking storage/bar cabinet with glass door and two removable, adjustable shelves
-cabinet with glass front that drops down and slides into place and a single adjustable/removable shelf
-14 shelves
-all original brackets/mounting hardware and two keys to the bar cabinet (one for use, one for backup) branded "Tecno"
-single, original, rosewood level for evenly mounting the components (these levels are scarcely seen with these systems, as they were considered assembly tools, not integral parts of the unit despite their modernist aesthetic, and often discarded over time).
The set can also be divided to create two separate units (1 and 3 sections or 2 and 2 sections), though if panels are used when diving up the unit, one will go unused.
Alternatively, we have a second six rail/five section unit, and the two can be combined to create a grand eleven bay system (panels only come with this unit).
Gold aluminum rails and black steel brackets/hardware are all original; rosewood has been refinished and is in very good condition with only light, age-commensurate wear. Fabric and rosewood panels show fading and wear consistent with age and use, though concealed largely by the mounted elements.
Note that the aluminum rails are included (the black backings are ledger boards that we mounted in order to work with the conduit we have running along our wall - they are not necessary for standard wall-mounting and will not be included).
Keep reading for more detailed dimensions.

H: 108.63" x L: 139.75" x D: 14" / 38.88" (cabinet door open including rail).
Each section measures roughly L: 28.63" including rails / 26.5" space between rails

Shelves: H: 1.25" x L: 27.38" x D: 10" / 11.88" including rails

Chest of Drawers: H: 17.75" x L: 27.38" x D: 17.75" (closed) / D: 19.25" (closed including rail) / 32.5" (drawers open including rail)
Interior drawer dimensions: H: 3.63" x L: 24.88" x D: 15.75"

Bar Cabinet: H: 55" x L: 27.5" x D: 12.25" (closed) / 37" (glass door open discounting rail) / 38.88" (glass door open including rail)
Bar Cabinet Interior: H (discounting adjustable/removable shelves): 53.25" x L: 25.75" x D: 10.5"

Cabinet with Drop-down glass door: H: 17.75" x L: 27.38" x D: 12.25" / 13.75" (with rail) / 18" (glass dropped down and pushed in including rail)
Interior cabinet dimensions: H: 12.5" (space above adjustable/removable shelf on the lowest setting) x L: 25.75" x D: 10.75" (shelf depth)

Each rail is H: 108.63" x L: 1.13" x D: 1"