Unfortunately, in this day and age, I will not hang anything on the wall.
If someone steals it, you end up in the paper as "GUN stolen from irresponsible GUN NUT who didn't lock it up!"...and the police get unhappy at you.
Even if it was a 19th century whatever that ammo hasn't been made for in over a century. Like, I have an 1878 Vetterli, which uses .41 Swiss rimfire...you won't find ammo for that. But even that stays in the safe.
Most I'd hang on a wall is one of the Denix replicas. They make nice Kentuckys, Sharps, even a Garand, but they can't be made to fire.