Hello, this was my family's camping lanterns in the 60s-70s. I don't remember where my dad got them from. He's in a long term care center now, so I brought them home with me. I started cleaning them up and realized that they may be older than I thought, as there is some packing news paper from 1945 Germany. I did my best cleaning them up and getting them both fired up. They have some chips in what I guess is porcelain? One lantern has the thumb nuts for the handle missing. They crumbled in my fingers when I went to loosen them, so I wonder if there are replacements? Do people do full restorations on these, or is it best to leave as is? TY