I recently began restoring cast iron skillets. I strip them down to the original surface with Lye and electrolysis. This is the absolute best way to get them back to like new without hurting the surface. Some people put them in a fire, a self cleaning oven, sandblasting, etc. I don't use those techniques, each of which can destroy a piece of cast iron.
Anyway here is a link to some pics of the pieces I have. I have them listed on the Griswold and Wagner Society web site and they have been selling fast. They are all vintage and name brand, no import or off brand stuff. I have a couple of Griswold pieces left, Wagner, older Lodge, Birmingham Stove and Range, etc. I have been shipping these pieces and I take great care in packaging. Shipping is usually $10-$20 depending on how many you ship and were they are going to.
http://s823.photobucket.com/albums/z...20restoration/