Couple of points:
1. I saw an article (I think in National Geographic) about a year or so ago, about the men who killed the Archduke. I seem to remember something about the gun being on display in some Balkan mueseum, where the killers are still national heros.
2. Wyatt Earp susposedly lost his Buntline Special over the side of a ship on the way to Alaska. He used many guns in his life, so there is no "one" Earp gun.
3. General Patton's two most famous guns were a S&W registered model 27, .357 magnum, and a Colt Single Action Army, .45 Colt. I think they are on display at the Patton Mueseum at Fort Knox.
4. General Patton's Guns had IVORY grips. He once famously said: "The only "man" who would carry a pearl handled pistol, is a pimp in a New Orleans whore house".