Many, many years ago a friend of mine had a Colt Gold Cup stolen. It was found a couple of years later on a thug that had committed a string of armed robberies. It was returned to my friend after the trial. The cops had engraved the case number and the officers initials on the slide and frame.
If the reason for return was documented, and you could get a copy of the press cuttings, it might improve collectability How about if it was from Abilene in the earlies?
A lot of guns get stolen in the dark, and anything that turns out embarrassing in the light of day gets dumped. In these days of DNA traces it is unlikely to be anywhere you would want to get it back from.
This is the grip from one of my French 1873 ordnance revolvers, with the name "L Lebrun" pencilled on the inside. It is about as common as "Brown", which is what it means, so there is no chance of proving anything interesting about him. But the evil Sergeant Markoff in the Gary Cooper movie was actually Sous-officier Lejaune, which means yellow. (Something to do with being 1939, probably.) The author, PC Wren, claimed to have been a legionnaire, so perhaps names were changed to protect the guilty.
The Legion, and perhaps the French army, took a robust view of stealing personal property. Wren describes an incident their superiors happily put down as accident, when a barrack-room thief accidentally pinned himself to the table with a bayonet through each hand. But the stealing of army property was merely "adorning oneself", a very minor charge. Maybe that is why these revolvers have a partial serial number on all but the smallest parts, and a pencilled name wouldn't hurt.