Griswold Colonial Breakfast Skillet

I found a Griswold Colonial Breakfast Skillet but mine does have Erie, PA. U.S.A
It is a large block logo - curious why Erie, PA U.S.A was not added?

Picture including the handle would have been nice but none the less I think the lack of the E.P.U. signifies that it was probably cast after the purchase of Griswold from Wagner. It just simply means it was made by Wagner from the p/n 666 at the Sidney, Ohio plant and not in Erie, Pa.
Im
I'm sure Doug will weigh in if I'm wrong.

I can get picture of handle if that helps! I figured a skillet with no Erie PA would have been on a small block trademark?

There are also small block versions without the Erie, PA. The made in Ohio after the acquisition theory seems the most plausible.