When ordering from the US, parcels may be subject to import tax and duty charges, which the buyer is responsible to pay. No. 3 Cast Iron Skillet Molders Mark Y 3 Notch Heat Ring 6 inch This product data sheet is originally written in English. Up for sale is a used No. 3 Cast Iron Skillet with Molders Mark Y and 3 Notch Heat Ring that measures 6 inches in diameter. Some one used the skillet as a decorative piece by adding a cow seen on the inside. Up for sale is a used No. 3 Cast Iron Skillet with Molders Mark Y and 3 Notch Heat Ring that measures 6 inches in diameter. Some one used the skillet as a decorative piece by adding a cow seen on the inside.