Mirro Manufacturing in Manitowoc, Wisconsin made many popular kitchen helpers.  This three piece bun warmer is bold Harvest Gold which marks its age from the 1960's.  There is a decorative stamp stating buns on the lid. It has Bakelite handles. The lid is vented to allow the steam to escape.  The basket liner lifts out.  There are some minor surface scratches and wear marks.  The bottom shows some discoloration from heat during past use. It can go from range to table!  Measures about 11" handle to handle X 9.5" diam X 7.5" tall