This is a very rare and very large German lantern made during the 1920s. Except for the one witch panel, it is remarkably good condition. The missing bottom connector is identical to the top connector, so if you are enterprising and creative, replicating one shouldn't be too big of a deal and wouldn't detract from its showiness. Perhaps 12 of these were found at a flea market in southern California in the 1980s. Perhaps this is one of those originally found then. (The seller is from that part of the world.) In any event, this may be an opportunity to acquire one of these eye-catchers for a reasonable price. The one in the collection is shown in my Inner Sanctum section on page 118. I acquired mine from a southern California dealer in ~1991. (She was the person who found the flea market cache.) By the way, this is the time of the year when good items seem to go more cheaply than normal on eBay. By this time, most casual collectors have spent their annual acquisitions budget, so it'll be fun to see what this brings.
10/31 Update: No bargain here. This sold for an astonishing $1,425.07.