Birmingham Stove & Range lids differ from most other cast iron lids. While other lids have ridges to allow condensation to collect and drip onto the food as it cooks, BS&R lids have "dimples" or indentations on the underside of the lid.
Former BS&R marketing manager Hugh Rushing writes, "The Lady Bess line was introduced to celebrate the [United States] bicentennial. Retailers were interested in glass lids, so the patterns and resulting diameter of the pans in that line were designed to fit standard available glass covers. Lady Bess also had wooden handles on the skillets and sauce pans. They were originally packaged as sets in a wooden crate. All very Early American. Later those patterns were used to make Con Brio, a short line with white porcelain handles which were sold mainly on the West Coast. This was also the first cast iron with a nonstick finish."
BS&R cast iron pans are very heavy, and they have a weight and a heft similar to modern-day cast iron pans from Lodge. However, unlike Lodge, the cooking surface of a BS&R pan is very smooth. The manufacturer milled down the surface of the pan and gave it a smooth surface, far more smooth than the surface found on any modern day cast iron pan produced today. This adds to the appeal of these older vintage pans.