Hello Multumesc,
It is my understanding that this is a regulation French infantry hanger of the Napoleonic era. French swords of the 19th century were primarily issued by two major government manufacturers, one being Klingenthal, in the east of France ( the other being Châtellerault in the centre of the country). During the Napoleonic period, regulation swords were also produced by the smaller manufacturer of Versaille, near Paris, which assembled weapons with blades from Klingenthal. Taking the time frame that the spine marking has given us, it could be that this hanger was Versaille built with a Klingenthal blade. I am sorry I cannot really read the spine marking properly, but it should say something along the lines of Klingenthal Novembre 1814 , or Manfre Rle du Klingenthal 1814 or similar.
The symbols you ask about are certainly armoury markings and inspection stamps, I do not know enough about these to comment further, perhaps someone more knowledgeable will discuss them more elaborately.
Kind regards,
Chris
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