I have a very good friend, who is more of a gun collector than I am. I have a safe, he has a bunker! He was driving through Wichita in the course of his job and saw a box in the street. Being who he is, he realized it was a pistol box. He found a Glock .40 in it with 2 mags. I never find these things. He called the police and they took and and traced it. When they found out it had NOT been used in a crime as far as they know and no rightful owner claimed it after 30 days ( I think ), they gave it back to him!
If I found one, my luck would be that it would have been used in a bank robbery or something.
My sister in law found a small pistol on the dirt road in front of her house a few years ago. She called
me and asked what she should do (she's an OK girl, but the hammer don't always strike the anvil squarely). I said not to touch it and call the SO, as there had been several drug related shootings in that area of her county. The SO showed up and took it. Talked to them later and they said it was a Raven .25 that had been stolen in a pawn shop break-in.
My son left his 20ga NEA single shot on the toolbox of my truck once and my wife took it on a ride to the local convenience store for a loaf of bread. When she turned onto the main highway in town, the gun (unbeknown to the wife) slid right off the toolbox and bounced out into the middle of US 82. She never knew it until she got home and the son asked where his shotgun was. After the obligatory palm slap to my forehead, we got in the truck and went looking. When we got back to US 82, there was a guy standing there in the median (turn lane) looking at the gun. We parked across the street at the post office and went to the edge of the highway and the man asked if it was ours (I guess we looked like we wee looking for something). We said yes and he said he had called the SO. We decided to wait for the deputy. He showed up and asked a few questions and was satisfied that it was our gun, so he gave it to us. I shook hands with the citizen and thanked him for his honesty (he could have taken it).
The gun's stock was skinned up pretty good, so I was able to try my hand at stock refinishing. It turned out looking better than the original finish, and my son learned a valuable lesson on keeping track of guns.