The 12 is a small logo and does have a heat ring. It has some staining and a somewhat grainier feel to the iron than the large logo skillets. If you have any questions on this set, it may take a couple of days to get an answer. The item "Griswold Cast Iron Skillet Set 6 7 9 12" is in sale since Sunday, August 21, 2016. This item is in the category "Collectibles\Kitchen & Home\Kitchenware\Cookware\Cast Iron".The seller is "fruitbasketmaniac" and is located in Knoxville, Tennessee. This item can be shipped to United States.