Here's an older carbon #5-5 that was a #5-6. Blade was in terrible shape and the leather handle had rotted clean off. Shop saved it by making it a 5" and putting on a stag handle with a nickel silver butt cap. The sheath is a modern replacement. Not correct for the knife.
And here's a carbon ivory and brass older #5-7 with exposed nut:
Regards, Doug