The bust is made of cold cast resin with a hand painted bronze finish. Each one is hand poured into a rubber mold. The sculpture is referred to as "cold cast bronze" as it contains bronze powder mixed with polyester and epoxy. it is backed up with strong fiberglass and resin because of the real bronze powder being used on the surface.
You are correct the material is Resin (Bronze Resin) for both Base and Bust.
Bust dimensions: 5” x 4.25” x 9.25.”