Solid Brass Egg Door Knobs Spare Set with Spindle (Several Finishes Available)Solid Brass Door Knobs Round Style 2 1 3 inch by 1 1 2 inches Includes Two Spare Knobs and Passage Spindle With the rise of the Industrial Revolution in the 18th and 19th centuries, advancements in manufacturing techniques led to the mass production of brass hardware, making it more accessible to the general population. Throughout the 20th century, brass doorknobs remained a popular choice for both residential and commercial buildings, prized for