I think this is a Lodge because I have several 3 notch heat ring skillets with the same 3 dots on the bottom. But this square skillet has no other markings. I also have a couple lodge's with dots on the handle. I've read these are just quality control dots so that the foundry knew their mold source, but I'm not sure how many foundry's used the dot method. It has a continuous handle ridge kinda of like a BSR. Measures 10-1/8" square, 1-5/8" high, 15-3/8" long with the handle.