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Write me at: The following tables cover the Class 1,2,3 machines only. Burroughs portable adding machine serial number serial number#You can check below to see if your serial number is within the description and tables. If that is the case, you will have to send a picture and the serial number to me, and I will be able to help you with a rough idea of the date. Burroughs portable adding machine serial number serial numbers#If your machine was built after that, you will notice that the serial numbers in the tables are smaller then your machine's serial. ![]() These table will only provide manufacturing date information if your machine was built before 1924. Using the tables below, you can then identify the year of manufacture of your machine. So a serial number like 4-12762 would indicate a Class 1, Model 4 machine. Generally, these machines had a prefix to the serial number that describes the model or style. You will also need to identify the model or style of the machine from the descriptions in the information provided. The manufacturing date of early Burroughs Class 1, 2, and 3 machines can be identified by the serial number on the front of the machine. Some later model portable adders had the serial attached to the base of the machine, in the very front. Portable Adding Machines - usually on the green keyboard plate, at the bottom center, just below the row of 1's keys. Low Keyboard machines - lower front just below the case lock key hole. High Keyboard machines - lower front just below the case lock key hole. Locating the serial number is generally easy to do. At the very end is information about the Class 8 and 9 (Portable) adding machines. The information below will help you to find dates of the early Class 1 and 2 (high keyboard) machines. While very common in banks for years, these models are more difficult to locate today.Serial numbers are critical to the process of learning about the age of your Burroughs. These machines had special keyboard capabilities and unique carriage construction. The Class 10 machines were specifically built for receipting applications such as bank teller use, or for cash register use. During the war years, most production was designated for military use and all machines were painted army green.Ī significant change in the Burroughs product line from the early Class 1, 2, and 3 machines, with their heavy construction, the Burroughs Portable was the answer to competition from Victor, American, Barrett, Standard, Universal, Wales, and many other portable machines of the time. Burroughs built a tremendous number of configurations over the years, all designed around the same basis invention of the first “Portable” machine.Įarly machines were black in color, while later models were most often brown. Burroughs portable adding machine serial number series#The Class 8, 9, 10, and Series P were the mainstay of the adding machine business for many years. ![]() These machines could be electric motor powered or manually powered by a hand crank. This group of adding machines of the portable design were called "full keyboard" machines (9 number keys in each column, number of columns varied by style). While all adding machines could be transported, this group consists of a much lighter machine type released in the 1920's. ![]()
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