I was given this hone by the builder who is renovating my bathroom, along with a handful(!) of Boker King Cutters. It has chipped edges, and is dark brown, probably having been stored for decades in a drawer with well-oiled tools:



So I decided to lap it, using a Norton 220, then the Shapton DGLP, and found to my surprise that the interior is a gorgeous honeycomb colour. Here is one surface lapped and chamfered:



Ain't it pretty? Anybody recognise it?

Chris