Nakayama Tomae・Natural Finishing Stone・Awasedo・Kyoto, Japan #78 black length of cutting edge is

length of cutting edge is 3

the cutting part is made of high carbon steel and the supporting layer of Iron

oil contained is good for leather strops

The Kanjis on the  razor read as:

The こ (ko) looks a bit like an ホ(ho) but is just an old way of writing

Nakayama Tomae・Natural Finishing Stone・Awasedo・Kyoto, Japan #78 black length of cutting edge isNakayama stone from Mt. Nakayama, Kyoto. Slightly hard, 8000+ grit. Known for producing a true mirror finish and traditionally used for ji duya finishing on Japanese swords. Very smooth and pleasant sharpening feel. Hand sized stone that fits comfortably in one hand and can be used for one handed honing. You will receive the exact stone shown.