Oxalic Anodized Square Steamer

This is a traditional steamer made of oxalic acid alumite, which my grandmother used.
The lid and bottom plate fit together without any problems, and there are no holes, so it is in a usable condition for steaming food.
However, due to noticeable discoloration and deformation on the bottom, I am listing it as a junk item at a low price. Please understand that it is a no-claim, no-return sale.