Ok, guys here's the boring story: after I cleaned off the pan and looked at it in decent lighting, I can clearly see it is a "C" pan. I didn't see the marking towards the front. Instead, I mistook the "S" in "HARTER ' S" for a size, after missing the apostrophe....
Which goes to show that a blind acorn can confuse the squirrels....
Sorry for the confusion.
The Divot