Revere Ware replacement lid. Stainless steel domed lid features the iconic black  knob with tiered concentric rings. The inner seating ring measures just short of 6" (approximately 5 7/8" in diameter from outer edge to outer edge). The over all width is right at 6 1/4".  This lid is designed to drop perfectly into a standard Revere Ware 6-inch small saucepan, typical of the 1-quart or 1.5-quart vintage pots.  Always happy to combine multiple items.