OK...I'll try to explain and keep it short...
Grandpa died 1976. Had a mantle clock that had to be wound. When he died, the key disappeared (in a house that got torn down in 1983).
In January 1991, we (two stepbrothers and myself) are in the house in the middle of the afternoon. Mantle clock starts running, but the minute hand is moving like a second hand. When the hand gets to 12, the clock chimes the hour. Does this for about four or five rotations. My youngest brother hauls ass to the neighbors. My other brother and I look at the clock and try to figure out wtf is going on. My neighbor comes over and asks us what we did to the youngest. I show him the clock and he tries to come up with a reason it is running (the radio vibrating the clock, making the hand go round...). I agree that would work from 12 to 6, but what would make it go back up to 12?
So it finally quits and things go back to normal.
A couple days later, I am talking to my mom. I tell her about it. She asks if it was January 25. I confirm that it was. She says that was the 25th anniversary of his passing.
Fast forward about 6 months. We are rearranging the living room. My dad and I move the dresser that the clock was sitting on. While it is in the middle of the room, my dad opens the door on the back of the clock. The hammer that hits the chimes to make the noises is laying on the bottom in the back corner of the clock.
He (my grandpa) did little things every now and again that we would always give him credit for. That clock chiming was always him stopping by.