Here in Denmark The guard company of the Royal lifeguard regiment carry this model of saber on duty.
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The popular story is that the French used it, then lost a lot of them to the Prussians at Waterloo.
They then ended up in the hands of other German armies and a lot was given to support the rebels during the 1st sleswig war in 1848-50. And during that war Denmark captured them. And in 1854 it was then issued to the Guards.
(So the sabers are supposedly all French and was used during the Napoleonic wars)
But some years ago the Danish arms historical society was granted permission to take a look at every single saber.
I don't have access to the article about it, but the gist of it is similar to what James mention.
The actual sabers are from all over the place. Both in production location and year. Some are in fact original French infantry sabers produce early in the Napoleonic wars. So sabers that in theory could have made the trip to Moscow and in the end been lost at Waterloo. But most are not.
Some are prussian made sabers issued to Prussian infantry post 1808. And a lot are later "German" productions during the following decades.