This is a vintage mold called "kashigata". Kashigata were also used in the making of wagashi (nama-gashi or freshly made cake and hi-gashi or dried confectionery) for tea ceremonies.
Common kashigata motifs in the Edo era - chrysanthemums, plum blossoms
Meiji Era - spread of western technology - balloons, planes
World War II - national pride heightened - cherry blossoms, battleships - used as gifts for departing troops, ceremonies and commemorative occasions
*You can use this mold as food mold to cook. Please clean thoroughly before using. As you can see, there are so