CD 233 [020] PYREX embossed (F) PYREX REG. U.S. PAT. OFF. (R) 661 / CORNING MADE IN U.S.A. with a smooth base. Longtime piece pulled from the shelves of my collection. Nice deep rainbow Carnival Glass with a slight hint of train soot on the inner skirt helping to validate the authenticity of the color. Toughest of the Pyrex 61, 62, 63 series [CD 233, CD 234, CD 235] to get. Price $76.66 plus actual shipping. I would consider this VVNM to play it safe. Should sell quickly at this price. First email.