There’s no manufacturer’s name or date on this sink, so your guess is as good as ours! There are some scratches in the glaze on the underside, but the inside of the basin is in excellent shape. A photo of the bottom of the sink is in the gallery. The outside of this oval sink measures 19 1/4″ by 15″, the inside diameter of the oval is 17 1/4″ by 12 3/4″. The color is black with a blue underglaze, you’ll notice it looking a bit blue around the overflow. One only!