This is a replacement lid for a vintage Revere Ware 12 inch skillet frying pan. It's the largest and most difficult to find size in the Revere copper bottom stainless cookware line. The exact measurement of the inner rim is 11-3/4 inches diameter - there is a slight overhang above the inner rim of course. The lid is clean, shiny, and in very good condition with normal light storage marks.
Large 12 Inch Replacement Lid For Revere Ware Copper Clad Skillet