Reddish ball shaped objects.

1968-1969 Me (8) and my brother (12) were leaning on car facing south when we seen what appeared to be reddish color balls (like school play ground type) 12-16" diameter slowing moving west-east parallel with telephone line between houses intervals of 10 sec. I looked to see if someone threw them but no one around and the speed and flat trajectory inconsistent with a throw. I don't remenber how they disappeared and years later when we discussed what we saw, my version varied I only saw objects moving slow my brother said he saw them curving out of sky and moving fast untill they were on flat trajectory parallel with phone line. My brother has since passed on.
Date is approximate.  PD