Yes, I caught the grip length listed. My 1854 dragon is about an inch longer in the hilt overall. It is a smidge over 46" in the scabbard, toe to peen (and five pounds 4 ounces, these really are beastly). Shown below in an old photos with some spadroons and a repro Patton sword. The spadroon grips are just about four inches.so maybe your's really isn't that far off the mark.
The 1854 carabinier coming in with a blade a full meter, as does the 1816 cuirassier (per Jean Binck).
Cheers
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