Classic saucer shape seen in the early seventies.

I was a small child, probably about 6-7 years old.  So this happened in about 1972-1974.  I was watching Charlie Brown,"The Great Pumpkin" so this happened sometime in October.  My Father would go out on the back porch at night to smoke.  The porch faced almost due west.  I went out to see what he was looking at.  It was your classic "saucer shape" with two lights hanging underneath.  It was floating low over the creek about 400 yards west of the house.  About 300-400 feet up.  The moon was about 3/4ths full and was shining brightly off the craft.  It had an almost polished aluminum color.  The lights hanging underneath slowly changed colors though the entire spectrum.  They remind me of some kind of stage light.  Clear quiet night, no noise whatsoever came from this craft.  My dad and I watched it for about 10 minutes, then he told me to go inside.  I continues to what through the door for about another 10-15 minutes until my dad came in and it was time for bed.