Vintage Lisner Pyramid Necklace: 1960s Articulated Statement Piece

I have had this piece for over twenty years and still wear it with a sweater or suit coat, very minimal and stylish. It is signed Lisner on the back, has a heavy chunky chain which is 24 inches long, articulated triangular design with no plating loss possibly rhodium metal considering the finish which is beautiful. Have a hard-to-find gift for a friend or family member this would be a great option. The Lisner brand has been around since 1904 until 1985 and is highly sought out by collectors.