Nice Tiffany sword! If I had that my daughter would expect to inherit it, because it was sold by Tiffany. I wonder if she would expect me to put it in a Tiffany green sword bag. Model 1840 with a steel hilt. There should be PDL stamped on the opposite ricasso for Peter D. Luneschloss of Solengen. It was imported. The regulation model 1840 had a brass hilt as did its successor, called the model 1860 by collectors. It wasn't until the model 1906 that the brass hilt was switched to steel, but by that time the cavalry saber was obsolete. The one in the post looks to be in very good condition. Tied to a particular soldier increases its value to a collector even more and being under the command of Custer would boost its value yet again. That would be the sort of thing that would be way out of my price range.