This is weird, I just recently noticed after many years of watching that the coffee cups used in My 3 Sons, Donna Reed Show, Hazel, Bewitched and some other Columbia type shows are all the same. They are white with a wide black band at the top. I hope they sterilized them as they transferred from one TV program to another. ;)

Productions wise they probably did reuse the cups from each show. As a viewer, I would think " I guess many families used that style of cups. Today people use Corelle dishes.