Burkhardt Arithmometer - 1879
"I have a new addition to my collection that I thought you might like to add to your site: I established its date through a picture from the IBM collection, which dated an identical model (number 500) as being manufactured in 1879.

This early Arithmometer, serial number 519, was manufactured by Arthur Burkhardt circa 1880. It is distinguished by its clearing mechanisms (dials), which were eventually replaced by more efficient sliding mechanisms. 11/05/2001" Jay M. Goldman.

Courtesy of:  Jay M. Goldman

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