There’s no marks anywhere on this sink that tell us who made it, or the date it was made. It’s definitely an early one. and there is some wear and a factory “blackspot” in the glaze of the sink. It measures 14 1/2″ on the OD, and 12 1/4″ ID. The sink is slightly irregular, so BE SURE it goes under a countertop with a hole no larger than 12″. One only.