Knickerbocker Mfg. Co. Shower Bath Brush ~ Vintage ~ VERY RARE. Knickerbocker Mfg, Co. was a manufacturer of rubber shower/bath brushes made to fit any faucet. It was used for showers, shampoos, and bathing. Please review photos as they are part of the description. This product is made of rubber and was manufactured in the 1920's.
