I was about 12 years old and I was on a tree lined road after dark.
I looked up and saw what I thought was a sphere, but could have been a disk, passing overhead.
Could not tell how high it was, but seemed to be fairly low but well above the pine trees.
I estimate the size to be about 40' in diameter.
I didn't know what it was, and never heard of a UFO unil at least 2 years later.