The Antique Burroughs Mechanical Adding Machine, serial number 3 from the early 1900s, is a rare and valuable piece of American industrial history. This machine, manufactured in the United States, is a testament to the craftsmanship and innovation of the early 20th century. With its intricate mechanical design and historical significance, this Burroughs adding machine is a unique and sought-after collector's item for those interested in vintage technology and American heritage. Buttons work. Lever pulls. Not sure if it adds. This is sold as is no return.