A match for the containers? 16th-17th century ivory vases

[Jacob Carolus]

What is this container? Is it a single object or just three nesting boxes stacked on top of one another? 

Spandose (Bentwood Boxes)
 
The physical objects on the left are historic Spandosen (singular: Spandose), known in English as bentwood boxes or chip boxes.
• The Origin Region: This exact manufacturing technique originated and dominated in Southern Germany (Bavaria and Swabia), the Tyrol, and the Erzgebirge mountain regions.
• How They Were Made: Instead of being turned on a lathe from a solid block of wood, artisans shaved thin, flexible strips of wood (usually spruce, pine, or linden), soaked or steamed them, bent them into perfect overlapping cylinders, and stitched them together using tree roots or copper tacks. The flat lids and bottoms were then fitted into the grooves.
• The Stacking Instinct: Because of how they were constructed, they were naturally made in standardized, nested sets (exactly like modern measuring cups or Tupperware). A merchant would buy a stack of five or six nested boxes to easily transport dry herbs, pills, pigments, and costly spices without taking up massive cargo space.