Sorry if the picture is of bad quality, my good camera wasn't available.
To me, the 1977 penny has a mintmark that looks smaller than usual when compared to a penny with the same mintmark. I'm not sure if I'm correct though. If you can't judge from this photo I will take a better picture for you.
Sorry but the 1977-D Lincoln Cent does not have a Small "D" Mint Mark Error. What I see is Post-Mint damage to the top and top right portions of the Mint Mark which makes it appear to be a smaller "D" Mint Mark when in truth it is not smaller.