Coin Values

Iggy, 1982 D small date copper pennies are extremely rare. Rare to the tune of only a couple being known to be in existence. While it is unlikely your coin is one of those rarities, you must bring it to a reputable coin dealer to have it inspected. It could be a zinc variety which is not worth a whole lot.

Make sure you double- and triple-check that the weight is 3.1g and not 2.5g.

Even if you don't end up having an ultra-rare 1982 D small date copper penny, you might be able to get anywhere from a few dozen to a few hundred dollars for it due to the rarity of the small date error depending on condition (yours looks a bit worn).

It is extremely difficult to gauge the true value of such collector items, especially on the internet.