Giant Cage Transformation Box. Circa 1920. Large box is filled nearly to overflowing with virtually any items that fit inside. When spun on its handles and re-opened, the articles have transformed in to a large solid metal birdcage filled with feathered inhabitants. Unusual sliding outer sleeve (see previous lot) helps conceal method. 17 ? x 13 ? x 16?. A giant example of this popular prop, in an unusual form, finely made. Stenciled designs on the exterior of the prop are reminiscent of the patterns used to decorate Thayer-made props of the 1920s and 30s.