The Antique Dr. Caldwell's Monticello, IL Bottle is a clear glass bottle manufactured in the United States before 1930. This piece of history belongs to the category of apothecary and pharmaceutical items, making it a valuable collectible for those interested in science and medicine from that time period. The Dr. Caldwell's brand adds a unique touch to this antique bottle, making it a sought-after item for collectors of vintage medical artifacts.