We have White Porcelain Door Knobs with Ornate door plates Vintage items. The center bar is square and they measure about 5 7/8" from one side of the door knob to the opposing side. The knobs are about 2 1/4" across the face of the knob x about 2 1/8" in D. The metal building up to the porcelain on the knobs is metal and completly rusted. There are 2 door plates, round on the bar in the center. They are ornate in design - they do have some rust on them as well.