lot vintage solid copper kitchenware, round bottom mixing bowls

Here are two copper bowls with round bottoms, made for beating egg whites. These measure 9" in diameter x 4" deep and 5 3/4" x 3 1/4", and have brass loops for hanging when not in use.

These are not marked with maker or country of origin, and both are tarnished. They have been used, and have wear and scratching. They are solid copper, so a good polishing would probably help a lot!