Disk, flying very low, over small town in Kentucky in 1962; close enough to see details.

I was 18 years of age, so this was a while back, but after supper one evening, my father and I took a usual short walk through a school yard next to our house.  From behind, over my right shoulder, I noticed a flying craft.  It was low enough to tell it was nothing but a flying disk. I pointed and said "Look!".  It went overhead, flying low and not making a sound nor leaving any contrail. We did nothing but stood still and quiet and noticed that it had no rivets or seams in the metal.  The sides didn't come to a pointed edge but were somewhat rounded.  I could see no windows and regret that I hadn't seen the front of the craft.  It moved at a steady rate of speed and, withing minutes or less, went over the hills in the distance.  To my knowledge, no one else in the small town saw it and I can understand why as it was completely silent and, if seen from the side, would probably be hard to see.  But this went right overhead.  Needless to say, we were frightened and not quite believing what we were actually witnessing.  My father has died within the past few years, but we talked about what we saw to each other many times.
This sighting is absolutely true, but I have never posted it before now.  I have mentioned to others, throughout the years, but found only a few who would believe it.
Witness indicates that the date of the incident is approximate.  PD