If you are registered, you get access to the members only section, can participate in the buy & sell second hand forum and last but not least you can reserve your preferred username before someone else takes it.
Thank you Torbs,
I have had a larger one gifted me. The later link by Clovis gives the rest of the information as to the origin of the stone. the outside of that box is the secret!
They are nice finishers!
The stone has now been traded away.
Funny thing,I went back to take a look in the same drawer and found a 145*40 mm stone looking excatly the same ;-) Thats not for trade though as it was my grandfathers and great-grandfathers stone for honing chisels.