Can Anyone Explain What Type Of Error I Have 1996 Penny?

I have this us 1996 Lincoln Memorial penny with a blurry outline of Lincolns outline over the 1996 date. Its difficult to read the date because of it. If looked at closely, some details such has Lincoln's ear can be seen in the outline of Lincoln that covers the date. Not clear enough to tell thats what it is unless you know thats what you are looking at. Took me a little bit to figure it out personally. Can anyone explain what type of error this is and if it's a rare find/possibly has any value or if its common/not of any extra value then face value. Thanks in advance for your guys help!