For the ultimate book on FN pick up "Ars Mechanica" by Francotte and Gaier. It is a great book that explains the company history in depth. Some really rare photos as well.

Fabrique Nationale Oct 15, 1888
  • Albert Simmonis, p300 c200
  • Jules Ancion, p600, c200
  • Dresse-Laloux, p600, c200
  • M.A.L., p600, c200
  • Dumoulin Freres, p600, c200
  • Joseph Janssen, p600, c200
  • Henri Pieper, p1200, c200
  • Pirlot et Fresart, p600, c200
  • Credit General Liegeois, p600, c0
  • Nicolas Vivario, p300, c0
  • Auguste Francotte, p0, c200
  • Emil et Leon Nagant p0, c200
  • prefered shares 6,000 common shares2,000

Take the barrels off and look at the proof marks:
http://damascus-barrels.com/Belgian_All_Proofmarks.html

Pete