I have a very similar stone, you can see pics of it here
http://straightrazorpalace.com/hones...ural-hone.html.
Every time these come up, the debate about it being a Lynn Mellylynn or Vosgiennes comes up. Still to this day i am unsure of its name.
But one tthing is for sure is that stone will never leave me, its a fine finisher, easy to use and its size for honing at 14 inches is quite unusual.