1996 Penny- Is This Called An Error,

A Cud is a special die break which involves the rim of the coin. I think I see what you are referring to and they are just die chips in the letters and not Cuds.

Your doubling looks like either Die Deterioration or a doubling effect caused by the plating but it isn't a doubled die.

There is a slight amount of MAD (Mis-Aligned-Die) on the obverse. The devices are not a doubled die. I see what might be die scratches/gouges, split plating/die deterioration. But nothing of an error. An error to me would be a one time event. Die wear/cracks/chips/cuds/wear/gouges/scratches are common events. Only Cuds are something that collectors take interest in. The other events are used in identification by variety hunters to ID a certain die. But other wide a common coin worth what it says on the back.