got this the other day... surprisingly thin and light, some roughness, pitting on the bottom... I think the mark is a size... - 14 , at least that's what it looks like to me... the outside edge to edge measurement is a bit over 15 inches. cooking surface is smooth and still shows the factory polishing swirl... except for that one pit/flaw in the middle there. I'm not sure I have anything large enough to heat this thing up on... the heat ring is about 12 inches across... maybe I could rig up some sort of heat diffuser that fits in there to heat it more evenly.
https://imgur.com/a/2HQRE
https://imgur.com/a/2HQRE