Salmens Hone
As well as operating the Melynllyn Yellow Lake Hone Quarry, and being the UK's largest importer of Turkey Stones, this company also retailed a dark-blue slate hone under their own name. The label depicts the Salmen's logo of a fish and an S inside an inverted red triangle, underneath this there is a picture of Britannia and script stating "Made in England".
slate is easy to I.D when lapping it give off a distinctive smell. you wont be able to I.D german water hones with this slate hone they are different hones.