This lovely Tiffin Box (brass) is from days gone by in the Mumbai industry of distribution of lunches for workers.
They would collect from the workers home and catch trains and then it would all go to a delivery point in central Mumbai and then get distributed to the worker.
This system is still in operation today but with more modern plastic containers.
I have included a photo of how the system still works today.
Also this one has a slight imperfection, but it is 40 years old