Vintage Butter Dish

Vintage Butter Dish. Not sure of material but I’m betting it’s stainless steel. Has a few rust spots from water marks. Should be polished. Pics noted. VG vintage condition. Original glass insert dish, but I don’t have the butter knife that goes into the prong rest. There were a few makes on this but there is no brad markings. Beautiful vintage piece. Holds a standard stick of butter.