Hideriyama "Ooban" HUGE Lv 2,5 (a1948)

"Ooban" is very Rare size of the stone, HUGE stone

This Size is super Rare for Jnats thats why the high price !

This one is Just perfect rectangular amazingly clean, first time i see so clean stone that is so big  

Very nice stone for beginners in Japanese Natural stones.
Super easy to use on tools and knives !
Produce mud quickly without using Nagura and quite fast stone too !
Makes very nice hazy kasumi finish, and very nice stone for Honyakis or laminated blades.
Beautiful even green colors. Very smooth feeling while sharpening ! 

No lines or inclusions at all ! 

Colector Grade ! 

Size: 230mm 107mm 33mm