Sidney,
The knife did not come with this sheath...of that I am "positive"! You may have "bought it that way" but it's not correct...and I'll give you (at least) 3 reasons why
1) Model "C" sheath is not and has never been available for a #25-5", Trapper.
2) Even if the shop were to sell a Model "C" sheath for the Trapper, it would not be 1/4" too wide and 1/2" too long.
3) This sheath was made for a Model #15-5 1/2", #17-5 1/2" or an #18-5 1/2".
4) The reason I am certain about this is the keeper strap was sewn into the sheath to accomodate a "double hilt" knife.
5) The reason I know that is the fact that your #25, even if it did fit, would have to be carried "left-handed"...(Stick it in the sheath and snap it)
6) If someone tries to use the argument that it could have been ordered for a "lefty"...please refer to #1 or #2..
Hope this helps, Capt. Chris