This early 20th Century tin-lined copper jelly mold was made by Kreamer. It's 7-1/4 inches diameter by about 3-3/4" deep with embossed pillar sides and a nicely detailed arrangement of fruit in the center. The patina has the type of spottiness that comes from long time kitchen display, exposed to moisture, steam, and heat, but it's not unattractive. The rim is very slightly out of round (though the soft copper is fairly easy to re-shape) and there are two equidistant thin, short splits at the rim (the longer one is shown in the third photo). Marked Kreamer on the side.
Kreamer Domed Copper Jelly Mold With Fruit