The Puzzle Box displays a beautiful Tsunami Wave inlay on the lid with natural wood and yosegi inlays on the sides. A floral pattern is displayed on the reverse. Exterior measures approximately* 6.5 ×4.8 × 2.6 inches Secret Compartment interior is approximately* 4.7 x 4.2 x 1.7 inches. 21 + 1 Steps are required to open this puzzle with a 5 Yen Coin hidden inside a small secret compartment within the lid. Stamped with Mr. Yamanaka's studio. Comes in cellophane wrapping and opening diagram.