This vintage balsa wood hat mold is a unique piece of millinery history, measuring 21 inches in diameter. Crafted from lightweight balsa wood, this block form is marked, adding a touch of mystery to its origins. Perfect for collectors or enthusiasts of industrial molds, this hat mold is a rare and specialized tool for creating custom hats or for adding a vintage touch to any collection. Its distinctive material and size make it a standout piece in the world of antiques.