Black Prince Razor Hone Pictures

Hi Everyone,

Just wanted some feedback as to the use of this carborundum razor hone?
It has no information on the box as to the type or grade of carborundum.
What sort of grit equivalent do you think it might be? Useful as a finisher before stropping?
It is from a old barber in Milton on the south coast of New South Wales, Australia. Aparently from the mid 1930s?
Attachment 91365Attachment 91364Attachment 91366
Thanks.

Looks like a typical barbers hone, just 5 to 8 strokes should do it to refresh an edge. Its probably ceramic and not carborundum,
as far as grit these types of barbers hone vary but probably in 7 to 10 k range.