Constantin Puzzle Box #3 - Find The Hidden Compartment in This Most Advanced Wooden Puzzle Pox from Recent Toys - Brainteaser Fun for Ages 14+ Constantin Puzzle Box 3 - A Masterpiece of Intrigue and Ingenuity! For centuries puzzle boxes have been used to pass secret messages and small precious items. This puzzle box contains a hidden compartment. Can you fnd how to open it? The Advanced level of Constantin Puzzle Boxes. Discover the art of puzzling and unlock your inner detective with the Constantin Puzzle Box 3, an exquisitely designed puzzle box that doubles as a captivating work of art. Crafted with meticulous care and ingenious engineering, this puzzle box promises hours of fascination and an intriguing brain-teasing challenge. Elegant Craftsmanship: The Constantin Puzzle Box #3 boasts an elegant and precisely crafted exterior that conceals a concealed compartment.