I tried googling around but couldn't find an exact logo match. and non griswold? I also have a bigger one, no markings, except a heat ring, it needs some cleaning up on the bottom so there may be a marking under that. Got these from my wifes grandfather, who is 85...he's still with it, but is not sure where they came from but said they could possibly be from his wifes mother. The logo looks pretty new for the griswold one, but not sure.