![]() ![]() The appraiser told me that it is in excellent condition for its age which increases the value. 2 Vintage 1930s Burroughs RIBBON TINS (empty) Serial Number: 9-1499972. VERY GOOD CONDITION - Minimal paint loss works great needs a good cleaning vinyl cover has a few tears buttons press with ease ribbon tins are excellent. Antique Vintage BURROUGHS Class 9 Portable ADDING MACHINE Cash Register - WORKING. For instance, if you were adding a long column of numbers with lots of zeros at the end, this machine would be much faster than a ten key. Burroughs also sold a 10 key machine, but this machine was faster than a ten key, depending on the numbers. They continued to sell it up into the 1980’s when the electric calculators came out. Can you imagine buying an adding machine that did not subtract? The machine sold for around $100 new and was perhaps the best selling business adding machine (mechanical) of all times. #Burroughs portable adding machine serial number series#Your machine has the little lever at the bottom to enter a subtract number. The Class 8, 9, 10, and Series P were the mainstay of the adding machine business for many years. He also shared the following: The Class 9 was the brother to the Class 8 which looked the same but did not have subtract capability. All information stated above was confirmed by the expert. Burroughs Adding Machine Company introduced the Burroughs Calculator in about 1911 to compete with the Comptometer. It is marked on the back: Burroughs (/) THIS MACHINE PROTECTED BY U.S. The serial number, on a plate on the bottom, is: 5-660768. ![]() 20 lbs I had the machine examined by an expert in Burroughs adding machines. The machine is marked on the front, underlined: Burroughs Calculator. Detroit, MI EXCELLENT CONDITION SUBTRACT LEVER at the bottom - this is the first model of its kind to introduce the ability to subtract 9 Columns of Bakelite Buttons Hand Crank Prints Numbers when Pulled Paper spool already installed INK INCLUDED Black Vinyl Cover 2 Vintage 1930s Burroughs RIBBON TINS (empty) Serial Number: 9-1499972 Measures 13" by 9" by 9" Cast Iron body weighs approx. Date 1937 Manufacturer Burroughs Adding Machine Company Place Manufactured U.S. A fairly early model as the Class 9 was manufactured between 1926 and the 1980s. Burroughs specialised in add-lister mechanical calculators. Antique Vintage BURROUGHS Class 9 Portable ADDING MACHINE Cash Register - WORKING - 1932 These machines are also known as Calculators or Cash Registers. ![]()
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