Can someone tell me a bit about Martin cast iron skillets or other pieces?  One of the cast iron pieces I inherited from my grandmother is a Martin skillet. I know it was forged in Florance Alabama, and that makes sense because my grandmother lived in that area.  Basically, I want to know if this is  (or can be, it needs to be really cleaned and reseasoned after years of storage) a good working cast iron skillet?  I believe it's a size 8, at least it's lid is a size 8. 
Thanks,
Ethan