I found a real nice Garmin a few years ago, it had one way point named HOME so I followed it to a softball field but there was no tent or camper there. I then checked the other way points and the MOB way point but came up with nothing. I then called Garmin's customer service number and gave them the serial number, no one had registered it yet. I went back up into the area that I found it over two weekends and no one said that they had lost a GPS. I figured that I had done enough. I called Garmin back and they sent me free of charge all the accessories that came with it brand new. It already had a OnX Maps Colorado map in it so I was set.
Good luck finding who ever lost it.