Here are five vintage copper molds from the 1980s, about 3-1/4 inches diameter. The four bright copper molds are from the same set. The heart shape mold has quite a bit more patina. They all need to be cleaned and polished but are in good vintage condition with no dents or dings. They're nickel or stainless lined and perfectly safe for food use.
5 Small Copper Kitchen Jello Molds