ottar sande

B with a star above it is the stamp of Inspecteur Lieutenant-colonel Etienne Louis Borson, who started his services with the State Manufacturers at Klingenthal on August 1. 1814. Klingenthal means "Blade Valley" in German, and there is a city in Saxony, Germany of that name, but in the world of briquet sabres it is the name of the Royal (later Imperial) factory of sword blades established in "Bas Rhine" in Alsace with imported workers and engineers from Solingen, Germany.

You may try this URL and see if you find the information you need there: http://klingenthal.chez.com/presentation_marquages.htm There are dravings of the stamps, the dates, names of the inspectors of Klingenthal Briquet sabres, - in French. You could also try www.swordforum.com.