Original Ohkawa Type Secret Box A (replica)
It's a remake of another Ohkawa Type Secret Box produced byTakagoro Ohkawa himself who is recognized as an originator of the Secret Box. It's different from N-10. You can slide the side plate and can open the lid. It's a simple 2 step Secret Box. How to use the wood is also different from present ones. The yellow color of mulberry wood changes to dark color with passing time.