Smith Corona Adding Machine Value Guide

The Smith Corona Adding Machine is a hallmark of mid-century office automation, representing the company's expansion from typewriters into mechanical calculation. These hand-cranked devices are highly collectible for their robust metal construction and the tactile, rhythmic operation of their internal gears.

What affects the value of Smith Corona Adding Machine?

• Mechanical functionality is paramount; machines that still cycle and print accurately command the full $120 market value.
• The cosmetic condition of the green buttons and the absence of paint chipping on the metal body significantly impact desirability.
• Presence of original accessories, such as the rubber feet or a surviving paper roll, can increase collector interest.
• Internal cleanliness and the absence of rusted gears ensure the machine remains a working historical piece rather than a parts donor.

How to Identify Smith Corona Adding Machine?

• Look for the signature vertical columns of green plastic number buttons characteristic of Smith Corona's mid-century design.
• Verify the presence of the original manual hand crank on the right side of the metal chassis.
• Check for the Smith Corona brand logo, typically printed or embossed on the front or rear metal casing.
• Inspect the paper tape feed mechanism at the top, which should be integrated into the metal housing.

History of Smith Corona Adding Machine

Smith Corona, a company primarily known for typewriters, also ventured into mechanical adding machines in the early to mid-20th century. These machines were crucial for businesses and offices before the widespread adoption of electronic calculators, allowing for quick and accurate calculations. They represent a significant piece of office automation history.