Vintage MCM Conti-System by Inter-continental-design LTD, Canada.
This unit is in excellent condition and amazingly well balanced and the frames holding each other unit which makes firm structure.
One of the cabinet could be used as small desk or mini bar system, whichever you like.
The shelves and cabinet height adjustable.
Rare Canadian made shelving unit.
 
Dimensions; 66" x 16" x 72"(H)
 
Feel free asking any questions you may have and happy hunting!