Hello Valerie. Sorry, but I have been busting a gut to say this. I have never dated an ERIE griddle but I have dated a few skillets and some dutch ovens. ::) ;D ;D
Actually the information you are seeking is in the Blue Book. If you like this kind of cast iron stuff, and I think we all do or we would not be here, then you will love the Blue Book. One of the Authors is a member here on WAGS. And he has attended many of our conventions as well. You'll be amazed how helpful this book will be. It looks kind of intimidating at first but one you go through it, it all makes sense. And of course if you have any questions after you get the BB just come on here and ask and we will be happy to help you. :)