Something like this maybe?
http://www.zietenhusar.de/kurassierdegen.html
Nothing remotely like that. Mine also has no scabbard! Mine is bowl hilted with two slots for a wrist strap. I bought it at auction described as a 'German Cavalry Hanger'.
Note the single ring scabbard. I'd love to see shared length and width of your huge cavalry sword's blade. Thickness at the guard and then towards the tip. Center of gravity, stuff like that. Pictures would be great, we all love pictures. There are several noted German/Prussian officers that used large swords during the ACW. Is yours from that era or earlier/later? Can you verify the makers name by looking or is this something you've read about it?
I'll take some pictures on my next day off. The maker's name is stamped on the ricasso. I used to use the sword for dispatching the adolescent seagulls that used to attack my hotel guests. It was ideal as it was so long and also, so well balanced. In your picture, at least that single fixing ring is well made, as opposed to the rather lightweight example in the OP.
With innumerable variations. I still know of no French troopers sabres of any type that have sharkskin grips with twisted silver wire. I am trying to find out how you came to the determination that the thread starter looked French and needs a two ring scabbard, and a sharkskin covered grip with twisted silver wire.
The sword you linked to had a sharkskin grip and was wire bound, albeit german. Shark skin gives a decorative finish, but also gives grip and is durable. The silver wire re-inforces the covering, and indents the sharkskin to the contours of the grip (but I am sure you know this).