Granite Wear Bread Flour Bin Lid

I seen this on another site and i remembered back when my mom used to have this part and the matching bottom. she told me it was a flour bin and she had it sitting next to her pot belly hutch and on the other side was the pie safe. but this guy thinks it is icebox door. I can safely say this is a top to a flour bin in granite ware. just in case someone else sees it because he did put a ??? by the title.