Ultra-Rare Nakayama Akapin Natural Whetstone Top Grade (Type 30) Up for auction is an extremely rare, top-grade Japanese natural whetstone (Tennen Toishi) from the famous Nakayama quarry, specifically sourced from the highly prized Akapin stratum. About two years ago, I acquired this precious piece from a well-known natural whetstone collector. It was originally sold by Ishihara Toishi Kogyosho, a long-standing member of the Kyoto Natural Whetstone Association that officially handles authentic Nakayama stones. The valuable original stamps from that era remain beautifully and clearly preserved on the surface. This is a magnificent, substantial specimen with exceptional thickness, fully meeting the standard dimensions for a Type 30 (30-gata) size. While I truly wished to keep it in my personal collection, I have decided to put it up for sale to downsize and organize my collection.
[Specifications] Length: Approx. 206 mm Width: Approx. 76 mm Thickness: Approx. 55 mm Weight: Approx. 2,020 g