Vintage Coppercraft Guild copper mixing bowls... I like this shape with the slightly flattened bottom, so much easier to manage than the completely round bottomed bowls for beating egg whites.
The larger of the two measures 6 3/4" across the rim x 3 1/2" tall. The smaller nests neatly inside it for storage, and measures 5 3/4" x 3". These are nice and heavy.
Both are used, and have a little light scratching as well as spotting and tarnish (we haven't polished these).