Hello David, how the heck are ya!!???  Longtime no see... :)
Now I'm not the fellas.. ::) but.... :D
1.  The shallow imprint of the "ERIE" is the first clue.
2.  While the handle looks 1st Series... look at first pic in Reply #2 and notice the less than symetrical handle (left side)
3.  Pics 2 and 3 in Reply 2.... poorly ground gate, lots of slag hanging on.  Would not categorize as repair, just amatuerish gate/grinding.
4.  Overall lack of definition in and around the heat ring.
5.  Air Pockets in the casting (holes)....
6.  Shallowness of number on top of handle
7.  Poor/no defined other  markings on skillet bottom....
just to name a few.... ;)  JMO.....
PS... I STILL do not have a #11......... >:(