I agree with Manuel, the blade is typical mid 19th century cavalry sabre form as produced in Solingen (very much like that of the US M1840 "Old Wristbreaker"). Interestly, when that pattern was proposed, many of the first examples issued were Solingen products until Ames Sword Co. got production going.
As Chevalier has noted, the style of the hilt suggests American officers swords such as the M1852, and many. American military swords of the 19th century followed French patterns.
The deeply canted pommel and the scabbard with single carrying ring, as well as the blade being of the Solingen form mentioned, in addition to the heavy bullion sword knot all together suggest to me this might be German. I dont have Bezdek or some of the references at hand to confirm that but hopefully someone out there in 'ID' land does

If not German, possibly made there for export?