This vintage Otis call button plate and button is a unique piece of architectural history from the 1980s. The plate and button have some wear but still retain their functional and aesthetic appeal. The design showcases the intricate craftsmanship of the United States and adds a touch of nostalgia to any collection. The item is not signed, but its theme of buildings and its country of origin make it a charming addition to any historical memorabilia collection.no keys