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Chris Enss has a display of Western-themed lunchboxes in her office. Two are from the "Roy Rogers and Dale Evans" and "Have Gun, Will Travel" TV shows. "Notice that the Roy Rogers Thermos has an actual metal top (cup)," she said. "The Thermos, combined with the lunchbox, makes them collectors' items. You might find a Roy Rogers Thermos, but it won't have a metal top. You just don't see the two together."