RE: 1904 Indian Head Cent

I've got about 10 of them (not including the Indian Head Cent).
Three of them are dated 1982, and from my knowledge they are the Copper ones. In 1982 they were producing both the Copper-majority and the Zinc-majority coins at the same time. In 1983, they ended the Copper-majority pennies.

Today, the Zinc Pennies are worth roughly $0.00779. I checked out the current price of Zinc and Copper per pound and this is the value I got according to the composition of a penny I currently have weighed at ~2.5 grams.