The couple's children -- Sheila Hillhouse, Lisa Thompson and Mike Couch, all of Portia -- will host the event.
Larry Couch and Beverly Duncan were married on July 6, 1962, in Williford, Ark., by Justice of the Peace John Dickerson.
They have four grandchildren: Kevin Hillhouse, Stephanie Hillhouse, Mitchell Thompson and Blake Couch.
All family and friends are invited to attend the reception.
They request no gifts.