Four (4) vintage dark blue plastic buttons of unknown manufacture. Approximately 3/4" (19mm) diameter. Three scooped petals curve around from the rim to meet in the center forming a three-sided knot-like design. The backs are flat except for a concave circular area around the shank which extends slightly; the depth from the top of the button to the bottom of the shank is 7/16" so kind of chunky. These should be washable. Good condition.