I looks like your Cent is a Copped Plated Zinc Cent made after mid 1982. What you have are ruptured plating bubbles. Not a Mint Error. The 7 looks like a simple case of Pareidolia caused by a plating blister. Pareidolia is seeing an image in a random pattern here are good examples such as Godzilla in a cloud and Rocky in a cut pepper
Think coin Leprosy with no cure. Soon you’ll have an empty shell, think shed snake skin. Not quite but almost! Lol. Reed.