This one is marked 792 US Springfield. The Varney scabbard is as hard to come by and this one is in good shape with readable Watervliet Arsenal marking and has the original hold down strap intact. This knife has the SWP 1881 cartouche on the handle and the blade has only been slightly sharpened with one minor nick on the it.
Best example you'll find for sale. The item "Rare Model 1 Iron Guard Springfield 1880 Hunting Knife with Varney Sheath" is in sale since Thursday, July 20, 2017.
This item is in the category "Collectibles\Militaria\Indian Wars (1866-97)\Original Period Items". The seller is "cavbob" and is located in Cadiz, Kentucky. This item can be shipped to United States.