This Mobilgas Marine porcelain pump plate measures 12” x12” and has the thin white border. As shown in the pictures this one is in almost perfect condition. These shield-shaped pump plates came in four different versions: a solid blue border (east coast), a solid black border (west coast), a wide white border (central & southwest), and a thin white border (used nationwide). It has the Ingram-Richardson manufacturer’s mark at the bottom center and is dated 1956. $4,500 including shipping, or best offer. You can contact me at firstname.lastname@example.org or at 937-763-1690 if you have any questions.