It is tin/aluminum, obviously made to be hung on a wall.
It is a vintage nesting shelf or box sometimes called a pigeon hole.
I can't find the exact one with a Google search but this chicken nesting box is about as close as you are going to get.
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Decorative chicken feeder. Hang against wall, high enough to keep mices out of food..
Flower pot stand ?
A mould for making decorative plaster ceiling tiles.
Well it looks galvanised so I don't think it is indoor use.
From the wheat design I would guess some kind if feeder.
Google image search says it is Antique!
Could be from a small wood fired heater as well.Cover for the ambers and drawer for the ashes...Or to feed the chickens....
Looks like a planter box or a decorative knick-knack tray perhapse.