The 1985 one-cent coin can be sold on multiple platforms. First, you can consider online auction platforms such as eBay, Auction.com, etc. On these platforms, you need to register and upload product photos and descriptions, waiting for buyers to bid or buy directly.

In addition, you can try to sell it in local antique markets, collection trading centers and other physical trading places, or mortgage or resell it through some mortgage pawn agencies. In short, a single one-cent coin is not a rare variety of high value, and you need to choose the appropriate selling method according to the situation to obtain the best transaction effect.