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SOLVED: This apparently is a baking dish. Thrift store find for my wife. But why is there a hole in the side? What is it?
(lemmy.dbzer0.com)
Oh, and it's LARGE. That's my range it's sitting on, and it covers about 2/3 of it.
This is the bottom and there's only this one number on it. It also would appear that it's supposed to rest on these pegs so it's probably not a lid.