American Adding Machine Antique Mechanical Metal Calculator w/ levers Patented

Specifications

This lever-set non-printing adding machine has an etched steel case, painted black and resting on four rubber feet. Seven levers move in circular arcs between slots in the case. The case is painted along the edges of the slots with digits from 0 to 9 (large and in black and white) and 9 to 0 (small and in red).

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