Cast Bronze Heart Shape Muffin Pan French Vintage Antique Collectible Chef

Cast Bronze Muffin Pan. Pretty sure it's bronze but brass is a possibility. Heavy and a magnet does NOT stick to it so it is not iron. It's a rare piece as far as I can tell as I can't find anything similar. Has "Coeur de fer" on the handle which is Heart of Iron in french. The words are very worn off. Looks to have some age on it. 7.5" wide and 12" W including handle. 1.5" H.