Rare mechanical calculator with glass walls. 1900

Burroughs calculator, manufactured in 1900. The first calculator in the world to successfully develop a system for printing the results. It is of great size and weight (more than 25 kilos). It has glass walls and is aesthetically in good condition, being a spectacular display piece. It prints correctly whatever amount is pressed on the keypad, but does not add up. The rear carriage is damaged, but is complete. Still a magnificent and rare piece, in excellent cosmetic condition and a superb decorative or collector's item.