Quick question ....so I know theres double denomination coins I know theres muled coins n brockage ...what is a coin that is lets say a Wheat penny ...yet you vaugly see an Indian Head cent on the coin as well? On both sides like obverse / obvrrse revrrse / reverse.
Without a picture, my guess would be either Pareidolia (which not only allows you to see Indian Head cents on top of wheat cents, but just about anything else you fancy seeing if you squint hard enough), or else a vise job. Neither adds any value to the coin.
@akkdayam as I said, just an educated guess based on knowledge of the minting process, the fact that there are two simple non-error explanations for this and no simple error explanations (only ones I can think of are astoundingly unlikely possibilities like what Spruett said), and a ton of experience seeing posts on this forum.