This is a jadite D handled restaurant ware coffee mug marked Fire-King Oven Ware Made In The USA on bottom.   It advertises the Butter-Nut Coffee brand.    This mug is in great shape.   It's used but not abused!   No chips, cracks, stains or utensil marks.   Minor paint scratches.  No wear of the shine on the mug.   It's super nice!