Here is a Burroughs Series 3 mechanical adding machine, serial #3-630014 from about 1920. It works, although it has not been cleaned or carefully gone through and tested properly, and is the hand crank and wide carriage model. It has 5 extra keys on the top left: "total", "subtotal", "repeat", "non add", and "non print". It is missing 3 black key tops: a "1", "2", and "9" but these can be had. It is a big, heavy machine and I will not ship it - local pickup only, $50 cash only.