This HARD TO FIND vintage LARGE himitsu bako measures approximately 6.9 x 4.3 x 2.7 inches and opens in only 4 steps. What makes this puzzle box unusual is that it boasts Sansui Zougan Inlays (Mountain/Lake design) ON ALL SIX SIDES! The box is quite old...probably from the 1940's and has heavier wear and has various scratches and a looser fit but indeed is a rare piece! Please view the pictures carefully. A GREAT addition to any vintage collection.