Collectors prize the old cast iron which fetch high prices (for old skillets, that is). I had an old footed, flanged lid Dutch oven that provided great camp meals while duck hunting on boat accessible only rice dikes on the Savannah River. An old Cajun family provided a recipe for duck gumbo/stew based upon a roux that I'd make at home. A dug hole with a charcoal fire inside the hole with the oven on top of the coals and with coals shoveled on the lid then covered with dirt was a low tech slow cooker which provided a stick to your ribs meal at day's end when we'd ceremonially dig up the oven for supper. To get a better than factory seal between lid and pot, I'd use valve grinding compound between lid and pot and spin the lid in place until evenly worn.
Here's my cast iron cookware. No dogs harmed in the making of this photo. Abby got curious about the woodcock cooking discussion earlier in this diversion.